Debian users can add the following two lines in /etc/apt/sources.list
and use Debians own package management tools, apt-get, aptitude, or dselect.
Replace xxxxx with lenny, squeeze, etc.
As of April 2011, Debian etch (4.0) is old. Debian lenny (5.0) is old stable.
Debian squeeze (6.0) is stable. Debian wheezy is testing.

deb http://ftp.indexdata.dk/debian xxxxx main
deb-src http://ftp.indexdata.dk/debian xxxxx main

These packages are signed with a key you can install as follows:
 wget http://ftp.indexdata.dk/debian/indexdata.asc
 sudo apt-key add indexdata.asc