I’m currently working on a project that maps a MidiFighter 64 to an Octatrack MKII.
The difficulty with the Octatrack is that it has different mapping modes which can even be set per channel.
If a MIDI channel is assigned to an audio track, muting that track sends feedback on the assigned channel.
As long as a MIDI channel is assigned to an audio track, all controls in the ctrl change mapping(manual page 139/140/141) with an X in the TRN column send feedback.
The selected note mapping has no effect on this.
There is one issue though, quick mute mode does not send feedback, ever.
Using quick mute in combination with a MIDI controller quickly gets the LED’s out of sync.
Best is to use the mixer page, same layout but with MIDI feedback.
Note that if you assigned a variable to ,for instance, a mute state, that variable needs to be updated when you press a button because the Octatrack doesn’t send feedback when receiving MIDI.
Only when using controls on the OT itself, feedback is sent.
To receive feedback of all the audio track parameters that the Octatrack can send(with it’s current settings), send CC# 61 with value 0 to any of the audio track channels.
For MIDI tracks mute/solo, only one of the audio tracks needs MIDI enabled.
The controls can be sent to any of the audio track channels, but feedback is only sent to the first available channel. The same goes for scene A/B select and the crossfader.
MIDI track mutes are also available for control on a MIDI track channel, but no feedback will be sent.
Also, for every audio track that doesn’t have it’s mapping set to standard you’ll lose control over a couple audio track specific functions that are in the standard note mapping(manual page 137/138).
Hope this helps.