Joe,
All you have to do is open the PLAY tab in MICROSTUDIO, click USE HARD DRIVE, open the tracks you want, arrange the order you want them by highlighting them one at a time and move them UP or DOWN with those buttons, and when done, click SAVE AS, give it a name, and save.
When you want to play from the playlist, open the PLAY tab in MICROSTUDIO, click HARDDRIVE, click OPEN, retrieve the playlist you saved, highlight the track(s) you want to play and click PLAY.
Sounds like a tour through the manual is in order
George