I already have many general midi files but they don't sound very good on my computer. I have created them with finale 2002. When i save them as midi files, they lose tempo changes and other data. I have been reading about how to create better midi files with finale but it seems difficult for this middle aged music professor to fathom. For example, the graphing skills required to make a simple crescendo seem beyond my ability to remain calm and non-irritable. Anyway, to avoid wandering, let me say that i would like to play my midi files, such as they are, and see how they sound with more realistic instruments. I have ordered a copy of GPO and am awaiting its arrival. When it arrives, will I be able to open my general midi files using GPO and play them back using GPO?