I have been using Rhythmbox and Banshee ever since I moved over to Gnome distros. They are both good (I prefer Banshee because it has a built-in equalizer). Of course, Banshee is written in a Microsoft language which sort of irks the FOSS purist in me. However last night I was bored and decided to try out some other players. First I tried Audacious. It is great if all you need is to listen to your own music. However, it doesn't support radio streaming, which was a turn off. Other than that it is excellent and lightweight. Then I tried Clementine. It is written in QT, so I didn't think it would play well with Unity/GTK. I was wrong. It is lightweight, full featured and highly stable/fast. Not to mention it is very aesthetically pleasing. It is an Amar0k 1.4 clone, much like Exaile. Its cover fetcher is top notch. Its music info section is great (fetches lyrics, album and artist info with no delay or errors). It also comes with ProjectM visualizations built-in and they just work. It comes with a built-in full featured EQ (a must have for me). Supports crossfade, gapless playback, etc. I will now use it from now on and not look back.