Startup manager

A couple of days ago i decided to cleanup the audio startup scripts i created so far and put them all together into 1 'master' startup script.
Since i have a number of different startup scripts for various configurations (internal sound card, firewire soundcard, network setup, softsynths ...) I wanted to make it flexible and easy to extend + avoid using the terminal to start it up. For this last bit i used zenity and this is the result :

I created a launcher on my desktop so i can easily access it, and although i'm not 100% happy with it yet it definitely helps me when i want to switch between different setups or when i want to try something new.

MP3 player with Jack output

When we're rehearsing a (new) cover-song with the band we sometimes need to listen to the song while rehearsing it (but only on the rear occasions -cough!- that one of us did not find the time to do his homework ;-)
We have our mixer and speakers set up, my laptop connected, so whats the problem ?  Just play the darn MP3 !  Well, no...