It is possible to use Destinator GPS without the minimize app functionality... If netsuo can fix the Always on top setting of the destinator window, then we can enter the route, quit destinator, change music, go back to destinator and it will resume the route that was last open! (This is a feature of the frontend I guess)... It wont, however, tell you to turn while it is off... but it is already a start!
Please try and get the external app module done netsuo! It allows nmc to be expanded ifinitely!