So thanks to some tips from @manton I ended up making a simple script to migrate Mastodon follows to micro.blog: gist.github.com/pajp/a496…
Anyway I was hoping someone on the interwebs knows something about MIDI on macOS: if I use AudioUnitSetProperty with kMusicDeviceProperty_SoundBankFSRef, I need to supply an FSRef. However, File Manager (and FSPathMakeRef) is deprecated. Is there a non-deprecated way to do this?
Set up ActivityPub for micro.blog, transferring a bunch of my Mastodon follows there, and finally set my @pajp@mastodon.cloud Mastodon account to redirect to my micro.blog ActivityPub profile. Also re-enabled Twitter cross-posting because who am I kidding.