I just picked up a 770 (Sept 2007) and a Kingston 2 GB RS-MMC card. It’s very slow. When you hook the 770 up to a computer via USB, both Linux and Winders XP often fail to write files, perhaps due to timeouts. Full read after full write verify is recommended. The 770 itself is pretty reliable, but can do little else while it writes to the card. At least reads are fast. So, while 2 GB works, i recommend the 1 GB Sandisk.
I have a wireless router. If the 770 could stream audio from my main machine’s, then i could hook it up to my larger house stereo. I mostly use an iPod for this, though not streaming. I’d dedicate a computer to it, but don’t want fan noise in the listening area. The 770 has no moving parts, so should work well. It does work well for audio local to the 770.
My repositories file is currently hosed, so i’ll need to reflash (again). This time around, gainroot is a priority, as i can’t install anything, so can’t break root. Feh. How did the repositories file get corrupted? I believe I added a bad repository. There’s no way to fix it from the interface, and the actual file can only be edited by root.