It falls down to 4 things mate The qaulity of your music being played, the levels on your mixer, the line in levels on your computer, and the recording levels in audacity it will be differnt for everyone but just go trial and error, just play 30 second off a song and check the qaulity, If it distorted drop the levels obviously for instance I'm set up like this, master volume on mixer about 50%, chanell gains stay out of the red obviously, laptop line in on 40%, audacity on 90% but I only found all of that after an hour or 2 of trial and error...that's all u can do man