http://www.dvforge.com/plug.shtml
The GuitarPlug is the perfect device for connecting your electric guitar or bass to a computer, for home recording, or even for live play-through. It works with any audio software that accepts a 16-bit, 48KHz USB audio signal. And, the sound quality of the the analog to digital conversion, and the low-latency have to be heard to be believed. Your guitar has never sounded so good