gstreamer support

I see there's a lot of effort put on porting current xmms plugins to the 
beep media player.
But, maybe there could be a "cleaner way" (on some aspects) and maybe 
faster way to do this: using gstreamer a backend.

In gstreamer, we've got all the plugins we need to:
-read files
-apply effects (and with support of LADSPA plugins coming...)
-output the audio

I think this would make the beep media player cleaner because it would 
"reinvent the wheel" as all the plugins would be updated with gstreamer 
releases.

One could say: we've got *many* more plugins for xmms than gstreamer. 
Yes, but if we port them on the beep media player, some will have to 
port them on xine, mplayer or any other library or player that people use.
If we port them to gstreamer and other projects start using gstreamer, 
the work will only have to be done once.

This is my opinion, anyway.

I'll take a look at the work that could be done to use gstreamer as the 
main backend... even if exams are coming fast...

--------
Patrick Guimond