Correct(swap) the logic of differenciating audio from video.
Correct(swap) the logic of differenciating audio from video.

svn path=/trunk/; revision=385

Tarnyko/rygel,Pelagicore/Media-Manager-Rygel-patched,jku/rygel,Pelagicore/Media-Manager-Rygel-patched,luisbg/rygel,GNOME/rygel,jku/rygel,Tarnyko/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,GNOME/rygel