not sure what hoss is talking about, but analog 5.1 out is fine..
in fact, as far as i know, it's the only way you'll get 5.1 sound for games and be able to use their qmss sound effects in 5.1, since the digital out is only a passthrough for dvd's (it does not do any dolby digital encoding)
hm it seems like hoss isn't even talking about the acoustic edge.