Hi,
I would strongly suggest a proper audio framework for this, cause you will likely benefit from a proper system to deal with complex music, background and sound effects mix.
nonetheless, these actions would be good to have just for the sake of it. I would suggest you use a proper curve based description of your fading, because a linear interploation is not really what your ear expect, and so a proper curve would be best here.
You can find the two actions attached to this post. But I suggest you get the
Ecosystem online browser, I have put them on there too.
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rss feed for playmaker activities.
Bye,
Jean