Can also re-write 51d to do those things using whatever buttons ARE supported by the headunit...
FWIW, the buttons I’m speaking of already are recognized, they just work the same way they did with the CD changer… they incrementally go from one mode to the next. There’s a setting in the phatbox.ini that says something to the effect of “use disc scan buttons”. I’ve enabled this… I’m not 100% sure, but I THINK before I enabled this, pressing one of the disc scan buttons would immediately skip to the next mode. So if you were listening in mode 2 (playlist), it would be the equivalent of pressing 3: it would jump immediately to album mode. Now, when I hit one of the disc scan buttons, it’s the equivalent of pressing the button that corresponds to whatever mode you are currently in: if you are in playlist mode, it will just say “the current playlist is”, then allow you to use the track skip buttons to change modes. Subsequent presses change modes. In other words, IF this setting made a difference (since I can’t remember for sure how it was before), the only difference that I can see is that the first press keeps you in the mode you were in before, as opposed to skipping immediately to the next one.
But the main point here is, it does recognize those buttons, AND it seems to be able to alter the function of those buttons (I was afraid there might have been something hard coded into the head unit that made those buttons be the same as pressing the next incremental direct disc button).
Personally, I think if the track skip buttons could ALWAYS be track skip buttons, and the disk skip buttons could become (playlist/album/artist/genre) skip buttons, operation would be much more intuitive, and faster. Hopefully someone much smarter than me can figure out how to make that happen.