To build the package:
 Get the cvs version, or .tgz and uncompress it,
 move main to something nicer... mv main mplayer-0.11pre (optional)
 move there (cd main)
 run dpkg-buildpackage
 be patient... and you're done!
 go up a directory and run:
  dpkg -i --force-overwrite mplayerXXXXXX.deb !!!!

 That's all folks!

TeLeNiEkO:/opt# dpkg -i --force-overwrite mplayer_0.11pre-1_i386.deb
Seleccionando el paquete mplayer previamente no seleccionado.
(Leyendo la base de datos ...
55966 ficheros y directorios instalados actualmente.)
Desempaquetando mplayer (de mplayer_0.11pre-1_i386.deb) ...
Configurando mplayer (0.11pre-1) ... <- Installed!

TeLeNiEkO:/opt#