Just downloaded your builds, and could not decide which to use on an Athlon64X2 ... P4, Athlon, and RTM all work with different optimisations, as A64 includes P4 (SSE, SSE2).
Would it be possible to compile K8-optimised binaries that support the full Athlon64 instruction set on win32 systems? Of course, this would also require mplayer itself to recognise this and use all of MMX, 3DNow[Ext/2], SSE.
I did some speed tests ... the difference was marginal between the three, with Athlon on top.
Thanks a lot for your builds, anyway, the normal release does not support the AVCHD I needed.