macosx/framework: Handle media changed events.
macosx/framework: Handle media changed events.

CollabraMusic/VLCKit,siuying/VLCKit,siuying/VLCKit,strukturag/VLCKit,programming086/VLCKit,programming086/VLCKit,CollabraMusic/VLCKit,kamcord/VLCKit,waterskier2007/VLCKit,brion/VLCKit,hpsoar/VLCKit,waterskier2007/VLCKit,simon1984/test,i386/vlckit,larrytin/VLCKit,kamcord/VLCKit,strukturag/VLCKit,kamcord/VLCKit,siuying/VLCKit,simon1984/test,simon1984/test,hpsoar/VLCKit,larrytin/VLCKit,waterskier2007/VLCKit,CollabraMusic/VLCKit