Love the idea of creating some interfaces for these watches.
Thinking for this one swipe left and right to change songs, down to view music menu, up for main menu, tap to pause, rotate for scrubbing, tap and hold for volume.
Special thanks to @Juan Carlos Ferraris for the psd template! Grab it here:
http://dribbble.com/shots/1470298-Android-Wear-Template-PSD?list=show