I actually tried to tinker with that app to see how it sends the commands to the musicplayer to switch a song etc and use it the same way but didn't have enough skill to get anything out of it.. :S

However thanks for your replys everyone! I'll have to look into the quasarmx then I think. I hope that it can be controlled easier..

Please let me know if anyone comes up with a solution to skip a song without pulling the phone out of pocket before me! Otherwise I will deliver my solution as soon as I've done it... Thanks!