[MPlayer-users] skins always appear black in mplayer

[Mumia W.]

Hello. I have a problem with mplayer. It's skin is always displayed in
black--regardless of what skin I choose. Does anyone know how I can fix
this? This is the software I'm using:

Debian 5.0 (Lenny)
Kernel 2.6.26 i486
mplayer 1.0rc2-4.3.2-DFSG-free
Blue skin
Industrial skin
Plastik skin

I'm thankful for any help.
PS. I posted this question to alt.linux.debian, but I got no responses.