use hardware volume buttons and free space on screen

[GoogleCodeExporter]

The default music players uses the hardware volume buttons. This might be a 
good idea.

when pmix is running use hardware volume buttons, thus freeing space on the 
screen for bigger album covers

Original issue reported on code.google.com by olivier....@gmail.com on 15 Apr 2010 at 2:09

[GoogleCodeExporter]

I checked that, in fact, the hardware buttons are allready used. Then the 
slider on 
screen could be removed and replaced by a transient slider, only appearing when 
playing music, as the defualt music player does.

Original comment by olivier....@gmail.com on 19 Apr 2010 at 11:44