Were those the settings you asked about?

Here are the settings: (ios)

I am not executing MatrixMixer.... Whenever code executes this line for a m4p audio file (song): let metadata = avasset.metadata(forFormat: AVMetadataFormat.iTunesMetadata) I get the same error five times. 2021-05-09 11:30:29.323176-0500 AudioFile[1276:40266]  ca_require_noerr: [result = CB_GetComponentDescription (mComponentInstance, &desc), -50] (goto home;) 2021-05-09 11:30:29.323296-0500 AudioFile[1276:40266]  ca_require_noerr: [result = CB_GetComponentDescription (mComponentInstance, &desc), -50] (goto home;) 2021-05-09 11:30:29.323363-0500 AudioFile[1276:40266]  ca_require_noerr: [result = CB_GetComponentDescription (mComponentInstance, &desc), -50] (goto home;) 2021-05-09 11:30:29.323410-0500 AudioFile[1276:40266]  ca_require_noerr: [result = CB_GetComponentDescription (mComponentInstance, &desc), -50] (goto home;) 2021-05-09 11:30:29.323437-0500 AudioFile[1276:40266]  ca_require_noerr: [result = CB_GetComponentDescription (mComponentInstance, &desc), -50] (goto home;)