cAudio: Created with the idea of helping developers include 3d sound and effects into their programs as easily as possible. - zlib license
RaumKlang: OpenAL-based sound engine which is designed to be as easy as possible to use ("quite not finished"). - ISC license - developer help appreciated (I was told)
Did anybody try one of these? Or knew of these but kept it a secret?
"simple" sounds good (harhar, I said "sounds"), let's hope they really are).