Turtle Beach makes PC surround sound a snap with its Audio Advantage Roadie USB Audio Adapter. Just a regular little USB sound card that snaps into your USB port, it'll hook you up with instant 5.1 or 7.1 surround sound connectivity, as well as all kinds of outputs to connect your computer or laptop to a bunch of different audio devices (like surround-sound headphones or portable speakers). Built-in stereo mics and a 10 Band EQ are also included, all for just $80. Oh, and looks like if you place your order before February 8th, you'll get a free 5.1 folding headphone worth $40.
Turtle Beach Audio Advantage Roadie USB Audio Adapter [Mobilewhack]