Since every couple of months or so someone asks about audio recordings for classical Greek, here is a list I’ve been keeping:
http://spiphanies.blogspot.com/2009/03/audio-resources-for-ancient-greek.html
(I posted a much earlier version of this list at the new textkit site, but since nothing seems to be happening over there, I haven’t kept it updated)
I don’t feel qualified at present to evaluate any of the recordings except in a very general sense, so comments (and of course, notifications about omissions) are welcome.