I used to adjust the music level and voice as I watched the preview of my scribe play. I found this very useful.

Adjusting them separately doesn't work for me. I find I have to go back and change the music level a few times to get it just right.  

I found it so much easier to set them together... anyone else?

Yes, the ability to adjust them both in one place is much more useful.

I upload them into Audacity (free audio editing software) and set them to the exact levels I want and they're always perfectly balanced at any volume level. 

I often want to test out a few different music tracks with the voice. 

Also, why use another program, when the function that existed before was so good.