This is blue-sky wishlist feature request. IrealB is becoming almost compulsory for scratch bands doing jazz standards. It would be extremely useful if the bandleader's device could control the band members' devices using, say, bluetooth or the like, such that any song displayed on the master device would also come up on all the slave devices, complete with key changes etc. Obviously everyone would need irealb running with the same songs installed. (It would also be great if direct songlist syncing could be done this way too, but that's another story)

This would really clean up those awkward moments while everyone searches for the song the leader has called.

Any interest in this from users or developers? Any thoughts on how hard it would be to implement?