What method of recording do you use? I have just bought an i-river MP3 for recording both cello and piano and it's really brilliant - an excellent sound quality and easy to use, and you can record onto a CD via the computer. As for the scratches and squeaks - if the cello is making them, they'll be recorded! I've found that my playing has improved

after listening to my own scratches and squeaks

, as I can hear exactly where they occur and do something about it - you don't always realise they are there when you are trying to remember a hundred and one other things!