Contact Info / Websites
As of right now, my music is dual-licensed under the Creative Commons Attribution 4.0 International License and the Creative Commons Attribution 3.0 Unported License; you may pick either at your discretion.
The basic terms of both are very simple and boil down to 1) Give appropriate credit, 2) Indicate that changes were made (if any), 3) Do not suggest that I endorse you or your usage, and 4) You may not restrict anyone from doing anything that the license permits. Satisfying these four conditions, you may use my music without permission for anything. You can even sell it if you want, but since credit is required and it's freely available for download, I'm not sure what you'd achieve with this.
As a minimum, "appropriate credit" involves at least mentioning that I made the music and linking back to the page where you downloaded it.