Digitization Requirements
In order to digitize audio from LPs or cassettes, you will need:
Audio cable to connect your analog source (turntable, cassette player, or other analog device) to your computer
Turntable or cassette player
Sound In jack or audio input device (if your Macintosh does not have a built-in audio input device)
Stereo receiver or preamplifier (required if using a turntable, recommended if using another analog device)

See Also:

System Requirements
Overview of Importing Audio
Starting a New Recording Session