Qirien's Music
I have been composing many different kinds of music off and on for about 10 years. All my music is released under a Creative Commons License, which means it is free for non-commercial use, as long as credit is given (either to Qirien or Andrea Landaker).
Having trouble playing OGG files? I recommend WinAMP for Windows, or any other OGG-supporting media player. I use OGG in most cases instead of MP3 because the files are smaller and higher-quality and non-proprietary.