I have an F700BT and can play media files via the USB connection in the glove box.
Set up:
F700BT
Pioneer Ipod cable CDIU230V
Blackberry 8330
16GB Micro SD
The files take a while to load, but i can eventually play them. I was also able to play the videos stored on the BB's SD.
Not sure if that information helps.
The problem I currently have is "no album artwork" with a 5th Gen Classic 120GB iPod. Funny thing is, I was able to see lalbum artwork at one point, but once I updated every album (260+) with the artwork from amazon.com the feature stopped working.