Everything seems to be installed:
$ apt list mplayer\*
Listing... Done
mplayer-doc/focal,focal 2:1.3.0-8build5 all
mplayer-gui/focal,now 2:1.3.0-8build5 amd64 [installed]
mplayer-skin-blue/focal,focal 1.11-2 all
mplayer-skins/focal,focal,now 3.2build1 all [installed,automatic]
mplayer/focal,now 2:1.3.0-8build5 amd64 [installed,automatic]
but when I run gmplayer, I see "Error in skin config file at line 6":
That file actually doesn't exist (There is one called main.png though)
