xine problems with wmv files

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http://forums.fedoraforum.org – I'm running F17 (64-bit) with the kde environment, up-to-date via yum. Xine is now having trouble with wmv files. Some of them will no longer play at all and some will play, but without sound. Most of them will play normally unless I attempt to jump ahead/back in the timeline, which causes playback to freeze and it can't be recovered; xine must then be killed via a console. I'm guessing it must be a codec problem because mplayer plays all these files without issue. I have the following packages installed: xine-lib-1.1.21-2.fc17.x86_64 xine-ui-0.99.7-2.fc17.x86_64 xine-lib-extras-free (HowTos)