Here is a High Speed USB Sound Card from Creative that is quite a bit less expensive than the Aardvark Direct Pro Q10 PCI Audio Card:
http://www.everythingusb.com/hardware/index/Creative_Sound_Blaster_Audigy_2_NX.htm

Some PCI Audio Cards are 'linked' to a PC externally. In other words, the actual Sound Card is 'outside' (called a 'break-out' box). the PC Case and Cabled to the PCI Bus by an included PCI interface adapter. The M-Audio Delta 44 PCI Sound Card is a good example. A break-out box can theoretically and for all intents and purposes "eliminate" the unwanted "noise" from the Audio signal. Which could provide a 'cleaner' sound to your recordings.

Here is another USB (although it is a USB 1.1 spec Sound Card):
http://www1.dealtime.com/xPF-Midiman_Audiosport_USB_Quattro

A USB 2.0 or Firewire Sound Card is recommended because of the higher transfer speed capability.

Investigate further on your own before you buy is my advice.

Best regards,
Mike

[This message has been edited by keybplayer (edited 11-06-2003).]