Where is the "Show" pop-up menu at the bottom of the Music window?

Hello math185,

Music is usually a protected feature that is linked to the Apple ID that was used to purchase it. Is this content that was purchased through iTunes or streamed via Apple Music, or did you upload it manually from disc or file?

Also, were the devices already set to share their media? Here's more info from Share songs from a shared media library in Music on Mac - Apple Support

Share your library with other computers

1. On your Mac, choose Apple menu  > System Preferences, click Sharing , then select Media Sharing.
2. Select “Share media with guests,” then choose Options.
3. To require users to enter a password before they can see your shared items, select “Require password,” then enter a password.
4. Select the playlists you want to share, or choose “All songs, movies, and TV shows.”

You can share radio station links and certain audio files (MP3, Apple Lossless, AIFF, WAV, and AAC).

Play items from a shared library

1. In the Music app  on your Mac, click the arrow  next to Library, then choose a shared library.
2. Move the pointer over any song, then click the Play button .

Thanks for using Apple Support Communities!

You need to click Library in the sidebar and select a remote home shared library. You should then see the options at the bottom right. Switch back to My Library when you're done importing.

tt2