I have a 2009 Dodge Challenger R/T with the media (whatever it's called) radio. The AM/FM, Sirius, Nav work, but when I try to download music to my hard drive via either DVD or USB, it keeps saying that there are no music files on the media I'm trying to download from. It is extremely frustrating. I know that there IS music files on the media and that my HDD in the radio works. What the heck could be the problem?