Uploaded September 2025 | Updated September 2026, 1 week ago
With User sounds (syx) downloaded from the internet. I couldn't figure out how to configure MIDI-OX to load all 100 User sounds at once. "Check sum NG!" error. It would only load the first 31. So, I saved some to locations 32 + and loaded a few other banks each time.
With User sounds (syx) downloaded from the internet. I couldn't figure out how to configure MIDI-OX to load all 100 User sounds at once. "Check sum NG!" error. It would only load the first 31. So, I saved some to locations 32 + and loaded a few other banks each time.
![1972 MATTEL Optigan Program Disc: Bluegrass Banjo [70201]](https://i.ytimg.com/vi/YEv48dv8ZlE/mqdefault.jpg "1972 MATTEL Optigan Program Disc: Bluegrass Banjo [70201]
Sounds from Optigan Music Maker. Get the Optigan app to hear better samples and it works just like the real thing. You can even play the virtual discs upside-down (backwards). Or, get them at optigan.com.")
