Works fine for me (Standard Quicktime Player), my mplayer rpm's;
mplayer-1.0-0.20.pre7.2.fc4.x86_64.rpm <<--this one may differ for you
mplayer-codecs-20050412-1.i386.rpm
mplayer-codecs-extra-20050412-1.i386.rpm
mplayer-fonts-1.1-3.0.rf.noarch.rpm
mplayerplug-in-3.17-1.2.el4.rf.i386.rpm
mplayer-skins-1.7-1.0.rf.noarch.rpm
And my mplayerplug-in.conf file;
Code:
#debug=0
#vo=xv,x11
#ao=arts,esd,oss
#download=1
#dload-dir=$HOME/tmp
#keep-download=0
#noembed=0
#cachesize=512
#use-mimetypes=0
#enable-ogg=1
#enable-smil=1
#enable-helix=1
#qt-speed=med
#rtsp-use-tcp=0
#nomediacache=0
#framedrop=0
#autosync=0
#mc=1
#black-background=0
#user-agent=NSPlayer