you can do a search of many many many many people that have asked all those questions yes you can hook a mixer up to your computer....it can go in your computer's sound card in the line in or mic input. you just need a cable from the output on your mixer to the input of the sound card. there are different soundcards you can get that are for recording. i dont understand the other question you asked but there are also different types of software that you can record the music with that you can save and burn to a cd... do a search and take a look around the different posts...you'll learn fast