We have discovered something unpleasant about RealOne Version 2. It has added "protection" that prevents any other application except the browser from using the Real Playback Engine.
We think we have a solution for this but it will take a week or two.
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Here's the detail (thanks to Matt and Nikolay):
Real's scheme will shut down everyone that uses their control like we do.
How it works:
Each second, Real's player component scans a hard-coded list of file types (mp3, ogg, m3u and even JRiver specific types like m01 and mjp) and looks at the program associated with each. If it detects that the program using their player component is associated with any of the file types, it stops working. It even goes so far as to stop any program in the same directory, so no program in "C:\Program Files\J River\Media Jukebox" can use their player component.