HelaMonster opened a temporary free WebSite
at Geocities. Here you could find cdabeta.rar which is CDA in v2.11 beta state but it seems that Geocities don't let us download rar files.
I've already sent 2 e-mails to the author with no answer till now. :(
But DivX-Digest keeps a copy of v2.1 on
this page