EVO Music skips tracks when plugged into USB

Got an Evo 4G, and whenever I have it plugged into my USB of my car, it wont play just about every other track. It will start at track 1, then skip 2, then play track 3, etc. Only happens when plugged in through USB, works fine when I use my headphones. Really annoying not being able to listen to a full album. They are all in mp3 format as well.

Thanks