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	eff free audio licence
	Electronic Frontier Foundation (EFF) http://www.eff.org/IP/Open_licenses/eff_oal.html
	EFF's Open Audio License provides a legal tool to use music and other expressive works in new ways. It allows artists to grant the public permission to copy, distribute, adapt, and publicly perform their works royalty-free as long as credit is given to the creator as the Original Author and the license is maintained. It is modeled after the GPL, which means the rights are granted "irrevocably and perpetually" as is stated explicitly.