Have you tried to install the two apps via yum?
mplayer can be found at the
atrpms repository, and xine at the
livna repository. If you haven't already done so, add those two repos to yum and then do
Code:
# yum install mplayer
or
Yum automatically solves dependencies.
Besides, if you're looking for a particular rpm or a dependency, a good place to start ist
http://rpm.pbone.net