Missing RIFF chunk

[leonard]

I used Samplitude Pro X2 and Reaper v5.30/x64. Reaper is cheapware but very good for creating music files. It does RF64. Samplitude is a full on mixing suite which is what IO use to de-noise and edit the digital file. I changed a bunch, the player plays them and all the software seems to work ok, although MS file explorer thinks they are all 1 hour 2 minutes.

I'll wait for further instructions,