there are no h/u 's that will control anything other than an i pod
the best you are going to get is a h/u with a headphone jack plug aux input to play it through
That is not true at all LOL!
If the MP3 player can be used as like Mass Storage (so if you plug it into a computer and you can select and play songs from folders, without the need for additional software) you should be ok using it through USB on a headunit, and you should be able to control it, going through song, artist, album and folder
