I tested this by first confirming it would not play, then looked in the folder and it was not there. I then expanded the zip file into the suggested folder. The demo then played even without a rebuild

Logfile reported: Auditioning file: C:\bb\RealTracks\Data\RealDrums Demos Audio\NashvilleEven16^01_solo.wma, and then C:\bb\RealTracks\Data\RealDrums Demos Audio\NashvilleEven16^01_band.wma [2022.926.0, 10/22/2022 9:09:12 AM]

Thank you for the diagnosis. Is there a bulk way of making sure all drum demos are located in that folder?

Regards
Rich