Mute option in the properties for media sources

[djquartz]

Currently when you add a media source, you have to mute it in the audio mixer section after. If you forget to mute it there and it's triggered then you will hear the audio over everything else of course.

If the mute option was in the properties when you create the new object, then it would quicker and easier to do. Also you wouldn't forget to do it initially.