Thanks for all the help. I'm just starting to get back into this after quitting 20 years ago. But a lot of stuff has changed. For starters, my WRK files instruments are all set up for a Yamaha keyboard before the Roland scheme was generally adopted, and they had a totally different idea on drums. But other voices are different as well...
Now I am using some of the tracks I made to accompany photo videos, and I have to convert the mid files into mp3. But there is a free on line program that does a good job on that.