Below are the library and development RPMs for xine-lib version 1.2.6. Be sure to check out the About the xine RPMs post for information on how these were built.
xine-lib - The main xine library
xine-lib-dev - The development xine library (needed if you're building an interface against xine-lib)
xine-lib-doc - Documentation
You'll also need a user interface - as of this release, the most current release of xine-ui is 0.99.9, and the most current release of gxine is 0.5.908.
(To save disk space, only the current release and two prior releases in the 1.2-series will be maintained.)