On Windows, I use the extra buttons of the Logitech Revolution MX to play/pause media playback, and to control volume (level up/down and mute/unmute.)
I cannot seem to find a way to reproduce this behaviour in Ubuntu 11.04.
Specifically I use the thumb wheel to control volume, and the search button to play/pause music.
The thumb wheel seems to have no function, but some applications register it as a click. The search button launches 'search for files'.
Is it possible to re-map these settings?