I would start with simply making a CD recording from the LP. I use a Yamaha CDR 0651 standalone CD burner attached to my amplifier. Using a dynavector DV20x cartridge (high output) I get exceptional recording quality from a clean LP. If there are minimal scratches the sound quality is quite good. This then makes it easier to transfer from CD to MP3 or wave files if you are wanting to enhance the sound, remove unwanted noises, etc. Depending on the level of sound quality you are looking for would dictate the next step. I bought software called Pinnacle Clean plus which was billed for "audio restoration", but did not have good luck with it- found it to be too labor intensive for minimal sonic gains. If you are not looking to do this yourself, I'm sure there are plenty of studios out there that could do it for you.