Sound Controls?

I am working with a sound object, and I need to be able to retrieve how long the song has been playing. There is a variable for duration, but none for how long the song has actually been playing. Is there a way to return more information on a specific sound channel?

Just start the variable for duration going once the sound has started playing.

I figured it would be something like that. I was hoping there was a more involved way to directly control sound assets. Thanks for the help.