e.g. :
Scirra store.
Freelance artist.
Free music library webpage.
Paid music library webpage.
Where do you get your music from?
https://soundcloud.com/ is pretty cool
Develop games in your browser. Powerful, performant & highly capable.
Eric Matyas site:
http://soundimage.org
God bless Kevin MacLeod.
But I might need to check other sources...