| The tar file is probably source code. First you un-tar it (tar -xvvf myfile.tar), then (in the folder where you un-tar-ed it) run './configure', when that's done, run 'make' followed by 'make install' (you have to do this as root).
What errors does apt-get toss out? Maybe try running 'apt-get update' before installing. I usually used this in Kanotix, you can also use the graphical interface, Kpackage, just look for the mplayer package. If you prefer synaptic (another gui tool for installing packages), you can install it via apt-get or kpackage.
For more on apt-get, check out link above. |