My dear frustrated compadre. I feel your pain. Took me forever to settle the Mplayer/.gmplayer quandary.
Here is the solution....I hope you are sitting up in your chair...its so simple it will make you sick to
your stomach. I am assuming you are using redhat, fedora....ok, do a google search for yum, download
the rpm for your distrobution and save it in your home directory......install the sucka....open a terminal
su....password....then type "yum update"......after it does its thing type "yum upgrade"....this one will
take a long time so go out to a movie or go to sleep or something.....after that is done reboot...reboot
reboot...only once but make sure you reboot.....after the reboot, opern the terminal again..su...password
type in "yum install mplayer".......then come back and tell me thanks.......