Hi @Sean Fish ,
Thank you for posting in Microsoft Q&A forum.
During my search, the only built-in setting for Media Streaming is "Prevent Media Sharing" in Intune administrative templates profile. If we disable or do not configure this policy setting, anyone using Windows Media Player can turn media sharing on or off. As shown below. Corresponding CSP is PreventLibrarySharing. Refer to:
Thanks for your time. Have a nice day!
Best regards,
Simon
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