Playback of mono files

Hello,
Maybe it is just my installation, but AF won’t playback files in mono. It’s been like that for some years now and I thought several times that it would be addressed in an update :wink:

An example - use Stereo Split to Dual Mono - the resulting files will not playback…

Best, Henrik

Works fine for me, use that hundreds of times daily. What kind of mono files? Do they have file extensions?