Nice! YouTube Labs 'made arrangements with artists and record labels so that you can add their songs to your YouTube videos'. I wasn't aware of it, but one song i released in ccmixter as Sohaclara is there: noTV. Two strong possibilities: 1- it got an Editorial Pick in ccmixter and 2- the name noTV.
So if you have a video on YouTube, go to AudioSwap page, click 'Try AudioSwap' then you'll choose a video and by clicking 'Replace Audio', you'll be redirected to a page like this:
Go to Genre: Electronica > Artist: Sohaclara > Track: noTV.
If you do change your audio with this song, sent me the link in the comments here.