"Sorry, the player does not support this type of audio file"

[sfldjamz]

First post here guys, so for some reason whenever I try putting music on my droid x by simply just copying and pasting it in my music folder it goes thru perfectly but when attempting to actually play the songs off my phone it says "Sorry, the player does not support this type of audio file"....any feedback on this i mean the songs are in mp3 format so id assume it would work perfectly fine