We've added an "Open Speech Repository" to the
formatting link
web site. This provides audio files that are suitable for VoIP system test, codec testing etc. There are other audio files available on the web however many have copyright restrictions - the goal behind the OSR is to create a multi-language database that is free of any copyright restrictions.
Contributions to the OSR are welcome - we need 16 bit low noise recordings at 8kHz and 16kHz in multiple languages. The web site has some information on what we need however do send us an email if you are interested.
Alan