Xnoise is basically an music player but it can also play videos too and unlike other Linux music players, it uses a tracklist centric design. I didn't call it a "media player" because even though it can play both audio and video files, it seems to be designed more towards playing music. Xnoise can in fact play any audio / video format supported by Gstreamer and what I like about it is that in the hierarchy view you have both music and videos - so if you have some videos along with your music, you can play the videos too, something I've always been looking for in a music player (using VLC for playing music just doesn't feels right for me).