Following on from a previous issue, I stopped using AKSampler to move to the functionality used in AKMIDISampler. Got my loops working again (with
AKSampler
AKMIDISampler
Another way to get this mystery sinewave is by using the normal approach to setting preferredSampleRate
// try session.setPreferredSampleRate(preferredSampleRate)
in AppDelegate for Audio Session... instead of setting it in the AudioKit AKSettings, it will produce the mystery sinewave midi synth...