We use Final Cut Pro X for editing, here is License agreement:
Section 2: Permitted License Uses and Restrictions. In Paragraph B, it states: "...you may use the Apple and third party audio file content ... on a royalty-free basis to create your own original soundtracks for your film, video, and audio projects." As the text in the EULA is not selectable, here's a screen shot of the applicable section. http://www.larryjordan.biz/app_bin/wordpress/wp-content/uploads/2012/05/app-03.jpg