Hi, My system: Dapper x86 When I first installed mplayer and plugin for firefox (1.5), it can be normally invoked by the plugin <a href="mediaplayerconnectivity">mediaplayerconnectivity.</a> Usually you see an icon from this plugin, whenever there is a media widget (such as windows media player) that's there on the page. But this icon just dissappered and I cannot invoke mplayer from it after a few more apps were installed, such as Audacious, which I menually compiled with a few dependencies mannually installed: libpango1.0-dev libgtk2.0-dev libglade2-dev bison libbinio-dev liblircclient-dev libogg-dev libvorbis-dev libvorbisfile3 libwavpack-dev libsndfile1-dev libmpcdec-dev libjack0.100.0-dev libsamplerate0-dev libartsc0-dev libsidplay1-dev libsidplay2-dev gawk libresid-builder-dev libcdio-cdda-dev libsdl1.2-dev libcurl3-dev timidity alsa-firmware-loaders alsa-source alsa-tools I don't know if Automatix2 and EasyUbuntu could mess up things as well, because I also installed these two. But I don't quite remember what else I used it. Any idea? Thanks. Beinan