I get the same error, so I guess they've been taken down. The only other audio files I know of are at http://www.greeklatinaudio.com
, which uses a modern Greek pronunciation.
And to answer your question about the modern Greek pronunciation (which is the one used in Orthodox churches) in the other thread, no, the pronunciation is very different from the one Mounce describes. You can see a comparison at http://www.biblicalgreek.org/links/pronunciation.php
. The table there simplifies some things and has some mistakes, but the only really glaring error about the modern pronunciation is that rho is not like a French r, but like a Spanish r.