Dear respected Dr. Carla,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
Iâm sorry youâre having a problem but based on your description we can work together to resolve it.
For the situation you encountered, we deeply understand the inconvenience caused and apologize for it.
As per your description, to loop a PowerPoint presentation, you select the option "Loop continuously until 'Esc'" under the
"Set Up Show" dialog box.

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To randomize slides with each consecutive loop, you may manually display them in random order using the âSlide Sorterâ view. Or use VBA code do it (you need to actually run the macro).
To play continuous background music during your presentation, you may insert the audio file you want to use into your PowerPoint presentation. Click on the audio icon on your slide to select it.>Click on the "Playback" tab in the ribbon>Under "Audio Options", select "Play in Background".>Set the audio to "Loop until Stopped" under "Audio Options".

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We appreciate your understanding that sometimes the initial suggestions may not resolve the problem very soon. However, we can work together to narrow down and resolve the situation.
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Waqas Muhammad