How to control Bii's iTunes:
To see what's playing: !itunes bii
To do a command: !itunes bii <command>
Commands are:
play Plays in iTunes
stop Stops iTunes
pause Pauses in iTunes
next Next track in iTunes
back Previous track in itunes
random Play random song in iTunes
repeat Turns repeat on / off
shuffle Turns shuffle on / off
reshuffle Reshuffles playlist
replay Replay current song (start from beginning)
g2s Go to song, Ex: g2s songname
g2a Go to artist, Ex: g2p artistname
g2p Go to playlist, Ex: g2p listname
vol Adjust volume, Ex: vol 85'
(I think all those should work.)