RadiativeNZ looks at the value Hercules Gamesurround MUSE 5.1 DVD soundcard.
It seems to be a pretty good value, check out what they say about it here.
The MUSE 5.1 DVD really comes alive in a 5.1 speaker environment. The tones
lacking from its use in a 2.1 setup are nicely produced in 5.1, which is most
probably related to the centre speaker picking those tones up. The surround
effects are produced nicely and the discreet channels are produced accurately.