So I used to use Quicktime 7.6.6 to preview Midi files, but I couldn't figure out how to make that work in the new Quicktime, so I just wrote my own simple Midi Plater for the Apple Silicon.
Currently porting my other music tools to Apple Silicon and yes, there's some changes that are required.
One of them is the drag-and-drop code I had, it doesn't work as is so that had to be updated.
I'll be revisited that EXS24 Relinker program I have as well. That one I'll make it a universal application.
MacBook Pro 10.8.5 2.2 GHz Intel Core 2 Duo 6GB Ram - Logic Pro X (10.2)
MacMini 10.13.6 2GHz Intel Core i7 16GB Ram - GarageBand 10.4.5 Logic Pro X (10.4.8)
iPad Mini iOS 12 - iOS GarageBand 2.0.1
Qosimo X70-A 10.13.6 Intel® Core™ i7-4700MQ Processor 32GB DDR3L 1600MHz memory, 2-500GB 7200rpm hard drives - Logic Pro X (10.4.8)
MacMini M1 11.5.2 Apple M1 16GB Ram 1TB SSD Logic Pro X (10.6.2) Rosetta 2 not installed