You let me jump through quite some hoops, eh ;)
I downloaded the source and commented out the Beep, but I still get this:
Unhandled exception. System.NotSupportedException: Cannot show selection prompt since the current terminal doesnot support ANSI escape sequences.
at Spectre.Console.ListPrompt`1.Show(ListPromptTree`1 tree, CancellationToken cancellationToken, Int32 requestedPageSize) in /_/src/Spectre.Console/Prompts/List/ListPrompt.cs:line 34
...