Downloaded trial and looks good. However, could not buy without being able to connect an instrument. Using windows 7 on new del studio xps computer and Edirol um-1 midi/USB interface. UM-1 appears as a device under sound controllers on port 0001 hub 0001. Another product," Sweet midi player" sees the device OK and plays an instrument, Yamaha EL 70. Have spent some time on suggestions in the help file on this subject without any success. Appreciate any answer.