kodi : Kodi is a free and open source media-player and entertainment hub ( http://kodi.tv/ http://kodi.wiki/ )
plex-media-server : Plex Media Server is a free media library that is intended for use with a plex client available for OS X, iOS and Android systems. ( http://www.plex.tv/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo-htpc
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-htpc-portage
If you have a problem : ycarus(-at-)zugaina.org