Thanks, Sarncan.
Can you tell me what format the USB drive was and what video format you were able to play on the USB stick? I have tried FAT32, NTFS, MAC Journaled on the stick, h264 mp4, MPEG 2 mp4, MPEG 4 mp4... nothing has been recognized.
The DLNA has worked but the connection has been a little flaky. I think I had better luck with TV assist than the other apps.
Thanks again.