OK, here are some of the strange things I see:

FIXED - When playing back, it forces the cursor onto the rightmost track
FIXED - When playing back while in the order list, behaviour of the cursor is really weird
FIXED - Timing sometimes becomes strange, like swing is added to the song
FIXED - Play a song whose order list is 00 01 00 01.  When it's done, press ctrl-P again, and it plays 01 01 00 01
FIXED - Alt-M doesn't do anything
- it would be nice if the key I was mapped to the note C
FIXED - Pressing P doesn't just play the pattern, but starts playing the song from the current order list when the pattern is done, which is strange.