The Shake2PlayNext app for android devices is a simple and awesome app that changes the music track as soon as you start shaking your phone.
Supports:
default player
MortPlayer
Mixzing
Roxon (aka Cubed)
Meridian
andLess
Rhapsody
Last.fm
doubleTwist
Astro Player
with some limits:
TuneWiki
Vanilla Music
bTunes
Download
Shake2PlayNext for android