Download OLA
From OpenDMX.net
You have a number of options, from bleeding edge to "stable" releases. Don't attempt to install different packages from multiple sources (i.e. olad from git, and ola-examples from tarball) otherwise you'll probably have weird & wonderful issues.
Sources via git (bleeding edge, may be broken at any point in time)
git clone https://code.google.com/p/linux-lighting/ ola
Tarball (official releases)
http://code.google.com/p/linux-lighting/downloads/list
Mac Ports:
port install ola
Third party RPMS (you can also build your own rpm with the spec file included in the tarball):
http://rpms.netmindz.net/
Slackware:
http://slackbuilds.org/repository/13.37/development/ola/
Debian packages (or you can build your own - see README.debian in the tarball)
http://imaginux.com/lighting/
