I'm still unclear as to the reasons why they use c++ and not delphi ? - if you could give some examples of daw's that are using delphi with good interfaces and operation so I could compare and get an idea of what it is capable of it might help me to understand more than what I do. I don't think it is just about interfaces as said before there are many other problems. I'm just at a lost as to why they use C++ and not delphi.