Rui, Thanks for your reply. I am trying to build Jack first just to see if it'll work with the CCRMA Alsa I've already got. So far I've done: [root@localhost jack-audio-connection-kit-0.99.35.3usx2y]# aclocal [root@localhost jack-audio-connection-kit-0.99.35.3usx2y]# autoheader [root@localhost jack-audio-connection-kit-0.99.35.3usx2y]# automake configure.ac: required file `config/mkinstalldirs' not found I can't find anything about this file, not even in configure.ac, and I really don't have a clue about this kind of thing (sorry if it's something really obvious). It certainly seems to stop the rest of the build working though. Any ideas? Thanks Stefan Turner ___________________________________________________________ Win a castle for NYE with your mates and Yahoo! Messenger http://uk.messenger.yahoo.com