Hello,
Using the V3 beta it seems that the demo (swf?) file (/modules/xerte/training/toolkits.htm) that used to be present has been changed (I think I saw a commit about this from several days ago). Unfortunately I now cannot play the demo. Testing this from a Windows laptop it works with IE 11, and Chrome 43.0.2357 (although it went straight into playing the video. It didn't show the screen with the video stopped and a '=>' arrow that you usually click on to start the video).
However, I use Fedora 22 Linux with Firefox 39. This does have the Adobe flash plugin installed, but it is an old version (11.2) since Adobe no longer support Linux. The old demo file worked fine with this, but with the new one I get a black window with the following text displayed:
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This browser does not support the video format needed for playback. Please install the Flash Player or use a different browser.
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I have tried using the gnash flash plugin, but that gave the same result.
I suspect that this is more of an FYI that the demo may not run for Linux users unless the Chromium browser (with pepper plugin) is installed (or possibly Opera).
John.