I've had trouble with JRiver as well, but not freezing up. And not with Win8. Mine had to do with no sound coming forth, even though it said it was playing. This was after a recent s/w update with Win7. I updated again and all was fine, so I doubt it was JRiver's problem. I do hope they get the Win8 problem fixed for you so you can concentrate instead on the 200. I should be able to hear one this Thursday.
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