[dj]

Hi, Fury Pilot:

I think you'll find that Notation Player does respond to and play back note velocity properly.

It, as Sherry has said, isn't intended to edit the data.

Note velocity, though, is intended to deal with performance variation.
Velocity can, depending on the playback instrument, not only affect volume, but timbre, envelope, even pitch in some cases.

To set levels for each track you should consider using Controller 7 (Volume), which is equivalent to the volume knob on your stereo, or Controller 11 (Expression) which is equivalent to the expression pedal on an organ. That way, you can set one level and leave it, rather than setting each note's velocity.

Notation Musician and Composer have a sophisticated graphing function for just that.

Good luck.

David