Video hangs few milliseconds while mute and unmute the media. Please try the below case for reproducing the issue.

1. Launch the below specific demo application.
  
http://capra.sfbay.sun.com/jmc-results/FX_Browser_test/FXSDK1.1/JFXMediaPlayer/signed/MediaPlayer.html

2. Choose any one of a media in the playlist.

3. Now click on play control.

4. Once media start playing, click on mute icon which is topmost right corner in the application.

Expected Behavior:

The audio should go off and video should play continuously.

Actual Behavior:
The audio goes off but video hangs for few milliseconds and start playing continuously.

I could see the above mentioned behavior with latest franca integrated build(#441) on vista sp1 with IE7 browser.