I was wondering if it's possible (or if it would be possible) for Hijack to send a sequence of buttons instead of just a single command when the telephone mute goes on/off. The intended use is to (a) do the normal SaveAux/RestoreSrc thing, but also (b) send a specific IR code through to my user app that will tell it to mute my XM radio receiver. This is necessary because my phone and the XM receiver are both using the aux input, so muting the XM receiver when my phone audio is playing is desirable.

I guess another approach would be polling /proc/empeg_power in my user app to detect the mute status, but if supporting sequences in extmute is an easy tweak, I think it'd be cleaner to get it from IR. Do the button presses sent by the extmute functionality go through IR translate? If so, could I just define a fake button code that gets translated to the sequence I need?