Aqualung is an advanced music player orignally targeted at the 
GNU/Linux operating system. Today also running onf FreeBSD and 
OpenBSD, with native ports to Mac OS X and even Microsoft Windows. 
It plays audio CDs, internet radio streams and podcasts as well as 
soundfile in just about any audio format and has a feature of
inserting no gaps between adjacent tracks.

Aqualung is still in beta and has some bugs. But, it's lightweight
and very modest on dependencies.