cherrymusic : A standalone music server based on CherryPy and jPlayer ( http://fomori.org/cherrymusic/ )
easymp3gain : GUI for aacgain, mp3gain and vorbisgain ( http://easymp3gain.sourceforge.net )
gmusicproxy : Google Play Music Proxy ( https://github.com/diraimondo/gmusicproxy )
mopidy : An extensible music server that plays music from local disk and more ( http://mopidy.com https://github.com/mopidy/mopidy )
stagger : An ID3v1/ID3v2 tag manipulation package written in pure Python 3 ( http://code.google.com/p/stagger/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a mrueg
For Paludis use this rsync : rsync://gentoo.zugaina.org/mrueg-portage
If you have a problem : ycarus(-at-)zugaina.org