As per last update email of today: http://www.beep-media-player.org/ However that's just an advertisement-page nowadays. Looks like the correct page might be: http://bmpx.backtrace.info/ Please also check if other spec-files (Fedora 7? Rawhide? ...) contain this URL.
bmpx-0.40.13-8.fc8 has been submitted as an update for Fedora 8
bmpx-0.40.13-8.fc8 has been pushed to the Fedora 8 stable repository. If problems still persist, please make note of it in this bug report.