Just read a few more of your posts -
1.) the user interface - these poor PG guys can't get away from the look and feel of the user interface looking 'old' (then again - I'm old, so I focus on useablity and function, and I find it very well done). Their issue is really 'style' - think Apple vs. Windows).
2.) agreed - many people HAVE used the programs MANY years ago and you know what they say about "First Impressions" - it has stayed with these people for 10+ years
suggestion: 1.) change the UI - get a UI expert from the 'state of the art' music UI group (PS - I don't even know what people consider state of the art UI's these days)
2.) ONce you have the new UI - start a new company, with a new name, and give the program a new title - so nobody knows and new "First Impressions" can be made.