I want to use a CC 'by-sa' licensed track for my film. Am I obliged to release my film under a CC license as well? I'm planning to send my film to various film festivals, and I can't afford to freely share it under a CC license, atleast for 1 year.
I will be only using a part of the track(the first 30seconds or so). Going by the terms of share-alike, does using a bit/portion of a soundtrack constitute "alter, transform, or build upon" of the work?
And what if I want to use a part from the middle of the track?
Please note that I'm not modifying the track in any other way.