After updating to the latest firmware, Mplayer seems to be working okay-- the video file disappeared so I havent tried that yet, but the sample audio file seems to be playing.

Copying over a USB connection to the internal or external memory seems extremely slow. It took about 3-4 minutes to copy a 100mb file over. I did a search, but didn't see anyone complaining about it?

The insertion of a mini SD seems to be very difficult to pop in and out. I need to use a stylus to push it in all the way, and tweezers to pull it out.