Fixed remaining fading bug for pause/resume. My technique was wrong. I computed the amount of time remaining on pause and when I resumed, I grabbed the current time as the start and used the time remaining as the end. I think this is wrong because the volume curve may not be linear if I do this. Instead, I will try saving the time remaining, but preserve the original fade duration. Then I will adjust the start time for the amount already played. So I don't need to create another variable, I will overwrite the fade start.