M-Audio pro quattro is going to be my interface device.

For converting my analog music signals to digital and getting them into the computer I am purchasing an M-Audio Pro Quattro USB device. Here is the blurb for it from the store's web site:

MANUFACTURER: M-Audio

DESCRIPTION: Genuine pro-quality sound, up to 24-bit/96kHz, through your computer's standard USB port. Pristine A/D/A converters. Multitrack recording and mixing without PCI card installation, zero-latency direct monitoring for simple recording and dubbing, balanced 1/4" TRS connectors, and selectable in/out levels to accommodate different instruments. 1x1 USB MIDI interface. Includes cable, power supply, cd.