I downlaoded mplayer-0.91.tar.bz2.
When i tried installing I got an message:

tar (child): mplayer-0.91.tar.bz2: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors

what do i do ?
how do i proceed?

In the directory where the file is:
tar xvjf mplayer-0.91.tar.bz2

forgot to download the file? (or more likely, not in the directory you downloaded it too!)

ya thanx...got it.
but now when i used the following command :
./configure it worked..
then i used:
make command it worked

but when i tried to install using:
make install command
i get the following message:

make[1]: ldconfig: Command not found
make[1]: *** [install] Error 127
make[1]: Leaving directory `/home/ram/MPlayer-0.91/libdha'
make[1]: Entering directory `/home/ram/MPlayer-0.91/vidix'
make[2]: Entering directory `/home/ram/MPlayer-0.91/vidix/drivers'
mkdir -p /usr/local/lib/mplayer/vidix
install -m 755 -s -p *.so /usr/local/lib/mplayer/vidix
make[2]: Leaving directory `/home/ram/MPlayer-0.91/vidix/drivers'
make[1]: Leaving directory `/home/ram/MPlayer-0.91/vidix'
if test ! -d /usr/local/bin ; then mkdir -p /usr/local/bin ; fi
install -m 755 -s mplayer /usr/local/bin/mplayer
if test ! -d /usr/local/man/man1 ; then mkdir -p /usr/local/man/man1; fi
install -c -m 644 DOCS/mplayer.1 /usr/local/man/man1/mplayer.1
install -m 755 -s mencoder /usr/local/bin/mencoder
ln -sf mplayer.1 /usr/local/man/man1/mencoder.1

what do i do now?
help me out....

Did you try to make as root? If not, try to do that.

I tried running MPlayer using the command:
./mplayer but got the following message:

CPU: Intel Pentium III Katmai/Pentium III Xeon Tanner (Family: 6, Stepping: 3)
Detected cache-line size is 32 bytes
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 SSE

Reading config file /usr/local/etc/mplayer/mplayer.conf: No such file or directory
Creating config file: /root/.mplayer/config
Reading config file /root/.mplayer/config
Reading /root/.mplayer/codecs.conf: can't open '/root/.mplayer/codecs.conf': No
such file or directory
Reading /usr/local/etc/mplayer/codecs.conf: can't open '/usr/local/etc/mplayer/codecs.conf': No such file or directory


What do i do now?

back to the past; When I install *.tar.bz2 files (in the file path) with
'tar xvjf file.tar.bz2' I still got:

tar (child): bzip2: Cannot exec: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors

I'm under w00t

unkka, you are not going to be in the same directory as the bz2 file... simple as that really... exactly what's all written above.