Kmouth

With kmouth, you can make the computer speak for you using its sound system.

Installation

 * install festival
 * install the KDE accessibility package
 * start kmouth
 * chose festival as speaking software

Fun with kmouth
The following command tells you witty sayings every 30 seconds, using the KDE speech daemon: while true; do dcop kttsd KSpeech sayText "`fortune`" 0; sleep 30; done