I've had great results using a free program called Audacity (There's a bit of a learning curve but nothing insurmountable.). I run my turntable, first to an inexpensive phono preamp that I purchased from a guitar store (around $50) and then out to my iMac via a left/right RCA cords into mini stereo plug cable I got from Radio Shack. I've got 700 or so albums that I'm chipping away at slowly by saving them to iTunes as AIFF files.
