RM is Real Player, right? I THINK there's a pro version of Real Player that can also encode in that format, I have a vague idea of a demo or something from years ago...

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.