Hi, in http://cvs.sourceforge.net/viewcvs. py/open-beos/current/src/kits/media/MediaDefs.cpp?rev=1.21&view=auto Should we keep this : // final & verified const char * B_MEDIA_SERVER_SIGNATURE = "application/x-vnd.Be.media-server"; or go with the OBOS Media server signature. I think this is needed for launch_media_server() ... Bye, Jerome