So this is pretty nifty, both because of the tool and because of the apparent business model. YouSpins.com allows you to remix tracks from 40 or so artists with a simple to use Flash-based interface. Once remixed, the new track can be saved back into the community space (which is very much ‘social software’) potentially serving as remix fodder for other users, posted on your blog or saved as a ringtone (which is where the business model seems to come in). The artists retain the copyright to the original songs AND the remix. It doesn’t seem to be a service that you could just upload any track to and start remixing – the remix tool appears to have access to the original unmixed tracks and so it works only with the artists who are in partnership with the site, but it is an interesting app and an interesting attempt to marketize the remix/ringtone culture. – SWL