After installing xine-lib-1_beta4 I noticed that nothing worked, a quick check showed that all plugins / libraries were looking for libxine.so.0 which ofcourse did not exits. I had previous versions of xine-ui / xine-lib (unmasked ones) installed prior to installing the ~x86 ones
Ok, figured it out now, when xine-lib gets built, it's linked towards the currently installed libxine.so.X So upgrading to lib 1_beta, makes all libraries depend on libxine.so.0 downgrading back to normal, makes all libraries depend on libxine.so.1 .. *gah* :) Seems only clean way with current ebuilds is to clear out the package before emerging another. Just a heads up I guess, since one of the other bugreports thought the problem got fixed by a new ebuild. What really happend was that, hey, now libxine.so.1 exists while compiling, so ofcourse it's linked towards that library. Oh well, have fun sorting this one out.
Should be fixed for versions beta2 and above. The ebuild symply refuses to compile if libxine.so.0 is present on the system. ;^)