Going to a computer is a good idea - I've done that in the past with some cassette tapes. Not only can you clean up the audio, you can also edit it as needed and even include CD text when you but CD-R's. Obviously you'll need a phono pre-amp, as Jason J mentions, but unless you've already got a receiver with a phono input you'd need one anyway (and a standalone phono pre would probably give better results than most receiver's phono input). This will also let you select a primary CD player for its performance with CD playback. Will you be using the player's analog output, or will you use it sole as a digital transport and use your receiver's DAC?