After putting the device into R&D 4-5 months ago, I got the idea of using the keyboard lights as a VU meter. Last week I started looking into it and came up with a flashing pattern (similar to Knight Rider, as lcuk likes to call it )

http://www.youtube.com/watch?v=g3pvdFpA1II

Here's the script for this pattern:
http://mohammadag.ucoz.com/maemo/KR.sh
As it is, the above script is just for fun (won't do anything other than flashing the keyboard)

lcuk also pythonized it and added it to two apps, one is mostly just a proof of concept (should also play the Knight Rider music if you have mplayer installed)

.deb package: http://mohammadag.ucoz.com/maemo/kni...er_0.1_all.deb run it from terminal as root, by executing "python /opt/liqbase/KR/KR.py" (without the quotes)
.py file (for developers, it can be imported and used as a loading/busy indicator), by lcuk, http://mohammadag.ucoz.com/maemo/KR.py