<font color='#000000'>Hello Rorythedog,
I use mostly PCs running Microsoft OS so everything below only refers to this type of computer.
(Short Answer)
Look for something by M-Audio. They have a consumer level Revolution soundcard. Their Delta series cards are pro/semi pro soundcards of very good sound quality.
Also try the RME soundcard. They are more expensive but sound extremely detailed. I know this may anger some people but, in terms of fidelity, these soundcards can compete with high-end CD transports that sell for thousands of US dollars.
For very a high-end soundcard, go with the Lynx. It is considered one of the highest fidelity soundcards you can buy. It is highly regarded by many pros. But you pay for all that fidelity.
(More Info)
In my opinion, any of the above-mentioned sound cards sound considerably better than the average consumer soundcard – including the SoundBlaster cards. SoundBlaster soundcards remind me of cheap mass-market receivers – many features - poor sound quality.
I’ve listened to the above cards (and currently own some of them) as well as many popular consumer soundcards.
To get the best sound quality out of your Windows 2000 or XP computer takes a little effort.
Microsoft has a “feature” called kmixer. Kmixer re-samples the music you play. To bypass kmixer, you’ll either need a soundcard with drivers that bypass kmixer (RME soundcards do this) or quality soundcards that support ASIO or kernel streaming.
The simple solution is to use an RME soundcard and not worry about the sound. Since their nonstandard drivers bypass kmixer, you hear the music/movie as it was intended.
ASIO and kernel streaming are different. To take advantage of their features you need two things.
1) A sound card that supports this feature.
2) Software that supports this feature.
For music, I like to use Winamp. There is an ASIO plugin floating around the Internet. Best of all, both Winamp and the plugin are free. There are other music software that support ASIO and/or kernel streaming, but I can’t think of them right now – I don’t use them.
As for DVDs, there are no software DVD players available that support kernel streaming for soundcards with analog outputs.
I hope this helps.
Enjoy,
B</font>