Im trying to figure out what mirrors i need to add to get mplayer,mplayer w32codecs..I added a linux packages 12.2 mirror to slapt-get and adding Gslapt..but when i went to install mplayer..it didnt show up..I added a 12.1 mirror and mplayer was available..but not the w32codecs..Are you suppose to mix up the mirrors..a 12.1 along with a 12.2?heres my slapt get list..
WORKINGDIR=/var/slapt-get
EXCLUDE=^kernel-.*,^glibc.*,.*-[0-9]+dl$,^devs$,^udev$,aaa_elflibs,x86_64
SOURCE=http://slackware.mirrors.pair.com/slackware-12.2/
SOURCE=http://software.jaos.org/slackpacks/12.2/:OFFICIAL
SOURCE=http://www2.linuxpackages.net/Slackware/Slackware-12.2/
SOURCE=http://www2.linuxpackages.net/Slackware/Slackware-12.1/

I don't use slapt-get, but you can easily compile mplayer and the w32 codecs with the slack builds from slackbuilds.org. First, read the how to so you know how to run slack build scripts:
http://slackbuilds.org/howto/
Then get the codecs:
http://slackbuilds.org/repository/12...er-codecs-all/
Then install mplayer and you are good:
http://slackbuilds.org/repository/12...media/mplayer/

Slackbuilds.org should be your first port of call for looking for 3rd party packages for Slackware. They always work.

Looking vlc led me to a repo named slacky..was slow download, but found mplayer and plugins there..mplayer -plugin balled about freetype ..I built it using script at slackbuilds..Handy little site..Have it book marked now..