I moved my OS to my 2GB RS-MMC card. Ever since, my audio streams would play for approximately 30seconds, then I get the buffering screen with the progress bar not moving. I then have to close the audio player.
Figured it out... Turned out to be a WPA problem. My PSK was too long I guess for either the router or 770 to handle. It was about 30 characters long. Reducing it fixed the dropping packet problem.