I'm using it over analog.Well i've used several DVDs with this so far with SPDIF. Are you using 5.1 analog or SPDIF?
Searched query: spdif
Tested with 0.8.2 (win) and spdif out works with it. 0.8.4 seems to be broken on ac3 output.I need to try the 0.8.2 to see if it helps.