Releases may be found at :
http://download.gna.org/avldb/
AVLDB's Subversion repository can be checked out through anonymous access over the SVN protocol , or over http. Depending on your network configuration you may prefer to use one or the other (for instance, if your internet access goes through a web proxy, it's unlikely that access over http will work).
Checkout over SVN protocol (TCP 3690):
svn co svn://svn.gna.org/svn/avldb/trunk avldb
Checkout over http:
svn co http://svn.gna.org/svn/avldb/trunk avldb