QUOTE(eevan @ Jun 3 2008, 10:26)

You're using Audigy 2 ZS, so there is DTS NEO:6 bundled with Creative Media Player and you can use it only from within this player.
The algorithm affects the quality, not the card. There are no distortions with NEO:6 and I'm using it mainly for jazz and classical CDs.
There is also a Dolby Pro Logic II, and as HeartsOfWar said, current A/V receivers have both these upmixing algorithms implemented, so user can choose which one to use.
Thanks, where do I get this "dolby pro logic II"?
Are both the NEO:6 and the Dolby better than the Foobar plugin?
Would you recommend one for me?
Thanks.
Edit: With the Neo 6, is the music mode better than the movie mode? Like having less distortions? Because the movie mode actually edits and rewrites the sound into 5 channels right?