It seems as though any album I use iTunes to copy on my mac, the song mp3 files show up as two on my flash drive when accessing it through my car stereo. If it is an album or song I have downloaded it works fine but for anything my mac does it doesn't work right. I know its not a huge deal but I find it very annoying have twice as many files in an album folder when half of them are doubles that do not work. Anyone know of a setting or something I can do to fix this?