Hi guys,
Well, we don't have to require sound files (and the storage space would start getting a bit much) but it is certainly nice to hear a song the way that the person creating it intends it to sound.
One way that we've accomplished that in the past is to have folks use something like DropBox, SoundCloud, SoundClick, etc, and then share the link to listen. There is a thread with links to some of these "store and share" sites at
http://www.notation.com/vb-forum/showthread.php?t=3130 (please feel free to add others.)
However I also know that sometimes folks are creating a work that is intended for a live band and so don't always tweak the .not or .mid file to what they hear in their head. They annotate the score and then let the live musicians do the work. I plead guilty on that one myself
So, please do feel free to share sound files if you want/can. But don't feel obligated
ttfn,
Sherry