I used this programm some time ago and its not that bad. BUT one player for only one audio format? I think It's better to have a all in one solution (for audio playing). ... I followed the instructions and copied the libs to my Nokia and gst-launch works great with tremor. But although i followed all (!) instructions the build-in media player does not like my ogg files ;( It says: "Wiedergabefehler" But the gconf-entry seems to be right!?