|Flute player. Photo by Curt Isakon|
As a creator of music, website content, and art I believe the most important thing one can do is educate yourself how to create as much of your own content as you can. This solves many of the dilemmas in worrying about what you can and can't use.
I have realized that over the years I have come to depend on myself to take the pictures, polish it in Photoshop, and create my own presence on the web so I was not dependent on anyone else's stuff. This is truly the answer. I have created an enormous amount of media content, and I am really not concerned about copyright issues because the stuff is mine.
So, take the time to learn how to create and use your own material as much as you can and this will help keep you out of harms way and people may be stealing your content instead of the other way around!