I'd love to give it a try but my Indigo Mac is in Mojave and all the rest has no indigo...
If somebody wants to give it a shot... I think you could modify the actions.xml and change the iTunes by Music. Something like this:
<Action id='launch'>
<Name>Music Launch</Name>
<CallbackMethod>launch</CallbackMethod>
</Action>
as opposed to:
<Action id='launch'>
<Name>iTunes Launch</Name>
<CallbackMethod>launch</CallbackMethod>
</Action>
But this is a guessing... I have never ever done apple scripting in any kind or form but I tasted the below script that was originally for iTunes and changed iTunes by Music and it worked...
tell application "Music"
set sound volume to 40
set EQ enabled to true
play
end tell
Changing the xml after the plugin has been installed is fairly easy I think... If anyone more versed on this than me (very easy) could confirm is this makes sense...
Anyway.. perhaps if anyone wanna give it a try as far fetched as it sounds... just copy and paste the following, then save it to a file called Actions.xml perhaps restart something and give it a try? I just copied the Actions.xml from the GitHub site and changed every iTunes for Music...
<?xml version='1.0'?>
<Actions>
<Action id='launch'>
<Name>Music Launch</Name>
<CallbackMethod>launch</CallbackMethod>
</Action>
<Action id='quit'>
<Name>Music Quit</Name>
<CallbackMethod>quit</CallbackMethod>
</Action>
<Action id='toggle'>
<Name>Music Toggle</Name>
<CallbackMethod>toggle</CallbackMethod>
</Action>
<Action id='controlsSeperator' />
<Action id='play'>
<Name>Music Play</Name>
<CallbackMethod>play</CallbackMethod>
</Action>
<Action id='pause'>
<Name>Music Pause</Name>
<CallbackMethod>pause</CallbackMethod>
</Action>
<Action id='playpause'>
<Name>Music Play/Pause</Name>
<CallbackMethod>playpause</CallbackMethod>
</Action>
<Action id='stop'>
<Name>Music Stop</Name>
<CallbackMethod>stop</CallbackMethod>
</Action>
<Action id='next'>
<Name>Music Next</Name>
<CallbackMethod>next</CallbackMethod>
</Action>
<Action id='prev'>
<Name>Music Previous</Name>
<CallbackMethod>prev</CallbackMethod>
</Action>
<Action id='back'>
<Name>Music Back</Name>
<CallbackMethod>back</CallbackMethod>
</Action>
<Action id='volumeSeperator' />
<Action id='setVolume'>
<Name>Music Set Volume</Name>
<CallbackMethod>setVolume</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield'>
<Label>Volume:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='increaseVolume'>
<Name>Music Increase Volume</Name>
<CallbackMethod>increaseVolume</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield' defaultValue='5'>
<Label>Increment:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='decreaseVolume'>
<Name>Music Decrease Volume</Name>
<CallbackMethod>decreaseVolume</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield' defaultValue='5'>
<Label>Decrement:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='volumeToVariable'>
<Name>Music Volume to Variable</Name>
<CallbackMethod>volumeToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='volumeFromVariable'>
<Name>Music Volume from Variable</Name>
<CallbackMethod>volumeFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='fadeVolumeTo'>
<Name>Music Fade Volume To</Name>
<CallbackMethod>fadeVolumeTo</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield'>
<Label>Target Volume:</Label>
</Field>
<Field id='duration' type='textfield' defaultValue='30'>
<Label>Fade Seconds:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='fadeVolumeUp'>
<Name>Music Fade Volume Up</Name>
<CallbackMethod>fadeVolumeUp</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield'>
<Label>Increment:</Label>
</Field>
<Field id='duration' type='textfield' defaultValue='30'>
<Label>Fade Seconds:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='fadeVolumeDown'>
<Name>Music Fade Volume Down</Name>
<CallbackMethod>fadeVolumeDown</CallbackMethod>
<ConfigUI>
<Field id='volume' type='textfield'>
<Label>Decrement:</Label>
</Field>
<Field id='duration' type='textfield' defaultValue='30'>
<Label>Fade Seconds:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='fadeFromVariable'>
<Name>Music Fade Volume to Variable Value</Name>
<CallbackMethod>fadeFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
<Field id='duration' type='textfield' defaultValue='30'>
<Label>Fade Seconds:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='fadeStop'>
<Name>Music Stop Fade</Name>
<CallbackMethod>fadeStop</CallbackMethod>
</Action>
<Action id='playlistSeperator' />
<Action id='playPlaylist'>
<Name>Music Play Playlist</Name>
<CallbackMethod>playPlaylist</CallbackMethod>
<ConfigUI>
<Field id='playlist' type='menu'>
<Label>Playlist:</Label>
<List class='self' method='menu_playlists'/>
</Field>
<Field id='shuffleNote' type='label' fontColor='blue'>
<Label>Note: shuffle state will remain OFF after this action completes.</Label>
</Field>
</ConfigUI>
</Action>
<Action id='playPlaylistShuffled'>
<Name>Music Play Playlist Shuffled</Name>
<CallbackMethod>playPlaylistShuffled</CallbackMethod>
<ConfigUI>
<Field id='playlist' type='menu'>
<Label>Playlist:</Label>
<List class='self' method='menu_playlists'/>
</Field>
<Field id='shuffleNote' type='label' fontColor='red'>
<Label>Note: shuffle state will remain ON after this action completes.</Label>
</Field>
</ConfigUI>
</Action>
<Action id='playlistToVariable'>
<Name>Music Current Playlist to Variable</Name>
<CallbackMethod>playlistToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='playlistFromVariable'>
<Name>Music Play Playlist from Variable</Name>
<CallbackMethod>playlistFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='singleSeperator' />
<Action id='playSingleTrackPlaylistNumber'>
<Name>Music Play Single Track by Playlist+Number</Name>
<CallbackMethod>playSingleTrackPlaylistNumber</CallbackMethod>
<ConfigUI>
<Field id='playlist' type='menu'>
<Label>Playlist:</Label>
<List class='self' method='menu_playlists'/>
</Field>
<Field id='trackNumber' type='textfield' defaultValue='1'>
<Label>Track Number:</Label>
</Field>
<Field id='playlistNote' type='label' fontColor='blue'>
<Label>Note: this action will create/update a playlist named "Indigo Single Track"</Label>
</Field>
</ConfigUI>
</Action>
<Action id='playSingleTrackPlaylistName'>
<Name>Music Play Single Track by Playlist+Name</Name>
<CallbackMethod>playSingleTrackPlaylistName</CallbackMethod>
<ConfigUI>
<Field id='playlist' type='menu'>
<Label>Playlist:</Label>
<List class='self' method='menu_playlists'/>
</Field>
<Field id='trackName' type='textfield'>
<Label>Track Name:</Label>
</Field>
<Field id='playlistNote' type='label' fontColor='blue'>
<Label>Note: this action will create/update a playlist named "Indigo Single Track"</Label>
</Field>
</ConfigUI>
</Action>
<Action id='playSingleTrackPlaylistRandom'>
<Name>Music Play Single Random Track from Playlist</Name>
<CallbackMethod>playSingleTrackPlaylistRandom</CallbackMethod>
<ConfigUI>
<Field id='playlist' type='menu'>
<Label>Playlist:</Label>
<List class='self' method='menu_playlists'/>
</Field>
<Field id='playlistNote' type='label' fontColor='blue'>
<Label>Note: this action will create/update a playlist named "Indigo Single Track"</Label>
</Field>
</ConfigUI>
</Action>
<Action id='shuffleSeperator' />
<Action id='shuffleStateOn'>
<Name>Music Shuffle On</Name>
<CallbackMethod>shuffleStateOn</CallbackMethod>
</Action>
<Action id='shuffleStateOff'>
<Name>Music Shuffle Off</Name>
<CallbackMethod>shuffleStateOff</CallbackMethod>
</Action>
<Action id='shuffleStateToggle'>
<Name>Music Shuffle Toggle</Name>
<CallbackMethod>shuffleStateToggle</CallbackMethod>
</Action>
<Action id='shuffleStateToVariable'>
<Name>Music Shuffle State to Variable</Name>
<CallbackMethod>shuffleStateToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='shuffleStateFromVariable'>
<Name>Music Shuffle State from Variable</Name>
<CallbackMethod>shuffleStateFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='shuffleModeSongs'>
<Name>Music Shuffle Songs</Name>
<CallbackMethod>shuffleModeSongs</CallbackMethod>
</Action>
<Action id='shuffleModeAlbums'>
<Name>Music Shuffle Albums</Name>
<CallbackMethod>shuffleModeAlbums</CallbackMethod>
</Action>
<Action id='shuffleModeGroupings'>
<Name>Music Shuffle Groupings</Name>
<CallbackMethod>shuffleModeGroupings</CallbackMethod>
</Action>
<Action id='shuffleModeToVariable'>
<Name>Music Shuffle Mode to Variable</Name>
<CallbackMethod>shuffleModeToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='shuffleModeFromVariable'>
<Name>Music Shuffle Mode from Variable</Name>
<CallbackMethod>shuffleModeFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='repeatSeperator' />
<Action id='repeatOff'>
<Name>Music Repeat Off</Name>
<CallbackMethod>repeatOff</CallbackMethod>
</Action>
<Action id='repeatOne'>
<Name>Music Repeat One</Name>
<CallbackMethod>repeatOne</CallbackMethod>
</Action>
<Action id='repeatAll'>
<Name>Music Repeat All</Name>
<CallbackMethod>repeatAll</CallbackMethod>
</Action>
<Action id='repeatToVariable'>
<Name>Music Repeat State to Variable</Name>
<CallbackMethod>repeatToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='repeatFromVariable'>
<Name>Music Repeat State from Variable</Name>
<CallbackMethod>repeatFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='eqSeperator' />
<Action id='eqStateOn'>
<Name>Music EQ On</Name>
<CallbackMethod>eqStateOn</CallbackMethod>
</Action>
<Action id='eqStateOff'>
<Name>Music EQ Off</Name>
<CallbackMethod>eqStateOff</CallbackMethod>
</Action>
<Action id='eqStateToggle'>
<Name>Music EQ Toggle</Name>
<CallbackMethod>eqStateToggle</CallbackMethod>
</Action>
<Action id='eqStateToVariable'>
<Name>Music EQ State to Variable</Name>
<CallbackMethod>eqStateToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='eqStateFromVariable'>
<Name>Music EQ State from Variable</Name>
<CallbackMethod>eqStateFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='eqPresetSet'>
<Name>Music Set EQ Preset</Name>
<CallbackMethod>eqPresetSet</CallbackMethod>
<ConfigUI>
<Field id='preset' type='menu'>
<Label>Preset:</Label>
<List class='self' method='menu_eq_presets'/>
</Field>
</ConfigUI>
</Action>
<Action id='eqPresetToVariable'>
<Name>Music Current EQ Preset to Variable</Name>
<CallbackMethod>eqPresetToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='eqPresetFromVariable'>
<Name>Music Current EQ Preset from Variable</Name>
<CallbackMethod>eqPresetFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='airplaySeperator' />
<Action id='airplayDeviceStatus'>
<Name>Music Airplay Device Status</Name>
<CallbackMethod>airplayDeviceStatus</CallbackMethod>
<ConfigUI>
<Field id='device' type='menu'>
<Label>Airplay Device:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
<Field id='status' type='checkbox' defaultValue='true'>
<Label>Active:</Label>
</Field>
<Field id='volume' type='textfield' defaultValue='100'>
<Label>Percent Volume:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDeviceAdd'>
<Name>Music Airplay Activate Device</Name>
<CallbackMethod>airplayDeviceAdd</CallbackMethod>
<ConfigUI>
<Field id='device' type='menu'>
<Label>Airplay Device:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDeviceRemove'>
<Name>Music Airplay Deactivate Device</Name>
<CallbackMethod>airplayDeviceRemove</CallbackMethod>
<ConfigUI>
<Field id='device' type='menu'>
<Label>Airplay Device:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDeviceToggle'>
<Name>Music Airplay Toggle Device</Name>
<CallbackMethod>airplayDeviceToggle</CallbackMethod>
<ConfigUI>
<Field id='device' type='menu'>
<Label>Airplay Device:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDeviceVolume'>
<Name>Music Airplay Device Volume</Name>
<CallbackMethod>airplayDeviceVolume</CallbackMethod>
<ConfigUI>
<Field id='device' type='menu'>
<Label>Airplay Device:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
<Field id='volume' type='textfield' defaultValue='100'>
<Label>Percent Volume:</Label>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDevicesGroup'>
<Name>Music Airplay Devices Group</Name>
<CallbackMethod>airplayDevicesGroup</CallbackMethod>
<ConfigUI>
<Field id='devices' type='list'>
<Label>Airplay Devices:</Label>
<List class='self' method='menu_airplay_devices'/>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDevicesToVariable'>
<Name>Music Airplay Devices to Variable</Name>
<CallbackMethod>airplayDevicesToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
<Field id='convert' type='checkbox' defaultValue='false'>
<Label>Convert?:</Label>
<Description>Convert to string to display in control pages.</Description>
</Field>
<Field id='convertHelp2' type='label' alignWithControl='true' defaultValue='none'>
<Label>Leave unchecked to use for restoring devices.</Label>
</Field>
</ConfigUI>
</Action>
<Action id='airplayDevicesFromVariable'>
<Name>Music Airplay Devices from Variable</Name>
<CallbackMethod>airplayDevicesFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='settingsSeperator' />
<Action id='currentSettingsDevicesToVariable'>
<Name>Music Current Settings to Variable</Name>
<CallbackMethod>currentSettingsToVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='currentSettingsDevicesFromVariable'>
<Name>Music Current Settings from Variable</Name>
<CallbackMethod>currentSettingsFromVariable</CallbackMethod>
<ConfigUI>
<Field id='variable' type='menu'>
<Label>Variable:</Label>
<List class='indigo.variables'/>
</Field>
</ConfigUI>
</Action>
<Action id='applescriptSeperator' />
<Action id='playApplescriptSpecifier'>
<Name>Music Play Applescript Specifier</Name>
<CallbackMethod>playApplescriptSpecifier</CallbackMethod>
<ConfigUI>
<Field id='applescriptLine1' type='label' fontColor='blue'>
<Label>tell application 'Music'</Label>
</Field>
<Field id='specifier' type='textfield' fontColor='blue'>
<Label fontColor='blue'> play</Label>
</Field>
<Field id='applescriptLine2' type='label' fontColor='blue'>
<Label>end tell</Label>
</Field>
<Field id='helpSeparator' type='separator' />
<Field id='applescriptHelp' type='label' defaultValue='none'>
<Label>Example:</Label>
</Field>
<Field id='applescriptExample' type='label' defaultValue='none' fontColor='blue'>
<Label> last track of playlist "My Playlist" whose loved is true</Label>
</Field>
</ConfigUI>
</Action>
<Action id='executeApplescriptText'>
<Name>Music Execute Applescript Text</Name>
<CallbackMethod>executeApplescriptText</CallbackMethod>
<ConfigUI>
<Field id='applescriptLine1' type='label' fontColor='blue'>
<Label>tell application 'Music'</Label>
</Field>
<Field id='applescriptText' type='textfield'>
<Label> .</Label>
</Field>
<Field id='applescriptLine2' type='label' fontColor='blue'>
<Label>end tell</Label>
</Field>
<Field id='helpSeparator' type='separator' />
<Field id='applescriptHelp' type='label' defaultValue='none'>
<Label>Example:</Label>
</Field>
<Field id='applescriptExample' type='label' defaultValue='none' fontColor='blue'>
<Label> duplicate current track to playlist named "My Favorites"</Label>
</Field>
</ConfigUI>
</Action>
</Actions>