Hi,
I want to write a *very* simple audio player in pygtk as part of a much bigger project related to ornitology and bird photography. My idea was to use mplayer in slave mode as backend to play the bird songs, since it has a volume gain feature (many bird songs records are quite low).

My problem is that mplayer crashes (both in my PC and in the N800) with the message: "MPlayer interrupted by signal 13 in module: unknown"

I was unable to find the meaning of this... Interestingly, mplayer does not crash if the same command is executed in the console.

This is the relevant part of my code:

os.popen('mplayer -slave -input file=/tmp/mpfifo '+self.file)

So:
1) Do you have an idea why mplayer is crashing?
2) If not, which other backend software with volume gain to use as backend?
3) Do you know how to use madplay as backend?
4) Any other software to use as backend, even without volume gain?

Thanks a lot,
L.