As I was looking for guitar related applications in Linux I found a game called “Frets on Fire” which seems to be the same as the Guitar Hero game (as seen from the recent Southpark episode). Pretty addictive even with the four initial songs available only. As easy to install as typing:
apt-get install fretsonfire fretsonfire-game fretsonfire-songs-sectoid
In the meantime, while trying to play .mid files I discovered that my soundcard lacks a hardware synthesizer and in Linux you have to install timidity, a virtual synthesizer:
apt-get install timidity freepats
After running the timidity service the command “aplaymidi -l” will show a list of available synthesizer ports. I’m still unable to have kguitar play though (a message about possible experimental importers shows up when I open .mid files).