whenever i trty to install mplayer or for that matter any video player i have 2 types of error
1.error while loading shared libraries: libaa.so.1: cannot open shared object file: No such file or directory
2.error while loading shared libraries: libmp3lame.so.0: cannot open shared object file: No such file or directory
please help 
Have you checked the README and INSTALL files included within the tarball to ensure you have the prerequisite packages installed? Looks like Lame and aalib aren't installed....
Just incase they've installed themselves somewhere "non-standard", have you tried searching your filesystem for the required files?
find / \( -name "libaa.so.1" -o -name "libmp3lame.so.0" \) -print
If found are these files in your LD_LIBRARY_PATH?
Depending on distro if you use something like apt or yum it should resolve your dependencies for you.....
Cheers
ZB