Hi,
I simply can't get mute to work with video in CourseLab 2.4

I tried:
1. Added a flash video (flv) and then used the onclik for Method Call MUTE and UNMUTE. It works in courselab, doesn't work in browser.

2. Added video (avi) with mediaplayer as default player
With the onclick I picked method setProperty with property name mute and value 1
It doesn't work at all: I get an error: 'Object doesn't support this property method.'

So, can you please explain, how to get this working any way possible? Maybe some dirty/javascript method for video mute or some browser settings for enabling flv interaction.

Regards,
johny