#10 Add mplayer to supported Linux serverside players

[Mark Gillespie]

Adding mplayer for Linux to the list of supported
serverside playback players. I needed to do this, as I
wanted to playback WMA encoded tracks, and the none
of the currently supported serverside players support
WMA, and the MPD (Netjuke2, and Netjuke1 patch),
does not support WMA either.

The patch is very straightforward, and it seems to work
better than the mpg123/ogg123/mpg321 players, as it
does not barf at problems like the HOME variable not
being set (although it does log a warning in the apache
log).

Dunno if patches are being accepted for Netjuke 1.x still,
but you may want to consider commiting this to CVS so
other people can benefit.

[Mark Gillespie]

Changes required from currentCVS to enable mplayer support