SlackBuilds.org/multimedia/gnome-mplayer

A GTK2/GTK3 interface to MPlayer. The power of MPlayer combined with a
friendly interface for your desktop; You can play all your multimedia
(audio, video, CD, DVDs, and VCDs, streams etc.), organize, sort and
create playlists, take screenshots while playing videos, be notified
about media changes. Full DVD and MKV chapter support, when supported by
Mplayer. Subtitle support with the ability to specify preferred audio
and subtitle languages if the media supports it. Support for cover art
retrieval from Amazon.com for audio media files with artist and/or album
information contained in the file.

The player can be used to play media on websites from your browser when
used with Gecko Mediaplayer and is the modern replacement for the
mplayerplug-in application.

Gnome MPlayer has a rich API that is exposed via DBus. Using DBus you
can control a single or multiple instances of GNOME MPlayer from a
single command.

Gnome MPlayer is not dependent on any Gnome libraries. However, the look
and feel of the application is based on the Gnome HIG.

libmusicbrainz3 is an optional dependency.