Google Music Question (Suggested Songs In Library)

I first started using Google Music shortly after it released. While setting up my account I stupidly checked the box that automatically adds suggested music into your library for free. Now my Google music library is riddled with crap that I never listen to. Does anyone know how to reverse that setting and remove all the free suggested music from my library? For the record I'm using Ubuntu now and I don't have any sort of Google Music application installed so hopefully this can be done in the browser. Thanks.