Noel and Bob,
Thank you gentlemen for this education about midi files. I think I'm getting the hang of it. I may be slow but I make a lot of mistakes.

Here's a question that perhaps either of you could answer:
When selecting a Hi-Q instrument from the Select a Prefix F/X track dialog box, there is the option to Play the instrument to preview what it sounds like. When I click on the Play button in the dialog box, however, I get a message box that tells me "there is no audio demo available for the file". Doesn't matter which instrument.

When I first upgraded from 2014 to 2015, this function worked; now it doesn't. I'm now on Build 414. Does it work for you?
Thanks again,
Ron