If you're using it on linux, be sure to get a jack enabled libaam.so
There's precompiled versions floating around for jad and ubuntu 8.04 (on jacklab.net) and the C++ source files, with compilation instructions can be found on
http://www.energy-xt.com/download/jack.php it's easy
(offcourse also get jack server and jackctl using whatever method your distribution uses to get software on your computer)
it can work without jack as well, but it's a lot more tricky and sluggish