XULPlayer 0.0.3 is released with much improved usability.
XULPlayer is an open source media player built on Mozilla XUL and MPlayer. It intends to be a flexible, user-friendly and web-enabled media player with support for playback of most popular audio and video formats.
Currently XULPlayer is still in early stage. Please just use it for fun and give us feedbacks. If you are interested in XUL, welcome to get involved.