We have a license from ASCAP which (I think) allows our non-profit (501(c)3) chorus to sing a bunch of (mostly Traditional) songs at our semi-annual concerts. We're fine with also paying for the ability to put snippets of recordings of our concerts on our website (discussions with ASCAP seem to be $250 or so for up to 30,000 "hits"). If we put together a slide show, the pictures of which are in no way synchronized with the recording snippets, and are "untimed" (no relation to the music being heard), why would a synchronization license be required? It'd be just a couple dozen pictures of the chorus members, audience, etc. Incidentally, ASCAP said that the $250 wouldn't apply if we put this up on YouTube, as "YouTube already has an ASCAP license".; how does that apply?