i use this card too and i have patch the envy24ht.h and change SSID_PRODIGY71 from 0x45534933 to 0x41543138
i have recompiled and it works but when i try osstest, <left>, <right> and <stereo> tests are ok, but side and rear tests make some horrible sounds (no music at all)... i had the same problem with alsa before my card was added to their database... is this a problem with codecs which are different from the old prodigy 7.1 ?
some infos for my card :
- VIA Envy24HT
- Wolfson WM8776 / 8766 codecs
http://www.audiotrak.net/products/prodigy71hifi/
for info, the prodigy 7.1 doesn't exist anymore...