Geeks has an ADS Tech RDX-150-EF analog to USB audio capture device on sale for $13.99. Cheapest I've seen anywhere else was $30.

Perfect for those who want to archive their vinyl, cassettes, reel to reel or 8-tracks to their computer using USB. Works with Mac and PC. Here's some of the specs:

Capture:
Bit Rate: 16-bit
Sampling Rate: 8, 11, 16, 22.05, 32 44.1 or 48 kHz
THD+N: 0.01%
SNR: 80 dB

Playback:
Bit Rate: 16-bit
Sampling Rate: 32, 44.1 and 48 kHz
THD+N: 0.005%
SNR: 96 dB

Input/Output:
Audio Input: RCA Stereo (Left and Right); SPDIF (Toslink)
Audio Output: RCA Stereo (Left and Right); SPDIF (Toslink)
Power: USB bus powered (no external supply needed)
USB: Type B USB 1.1 and USB 2.0 compatible as a full speed device

I received the interface today. 

I'm going to try it out, see how it sounds. I'll post some samples sometime in the next day or so.

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Back of the unit:
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