Are there any legal music downloading sites that charge a monthly fee but NO per-track - AND are compatible with Itunes?

Yes, there are a few legal music downloading sites that charge a monthly fee but NO per-track and are also compatible with iTunes. These sites offer a library of music that you can download and listen to as long as you are a subscriber. Many music streaming services that feature both free and premium accounts and are compatible with various Apple products can offer some of the options you are looking for.

Here are a few examples:

- Apple Music: Apple Music offers a monthly subscription plan that allows you to access its entire library of music. You can download songs and playlists to your devices and listen to them offline. Apple Music also offers a family plan that allows up to six family members to share a single subscription.

- Spotify: Spotify is a popular music streaming service that offers a monthly subscription plan that allows you to access its entire library of music. You can download songs and playlists to your devices and listen to them offline. Spotify also offers a family plan that allows up to six family members to share a single subscription.

- Deezer: Deezer is a global music streaming service that offers a monthly subscription plan that allows you to access its entire library of music. You can download songs and playlists to your devices and listen to them offline. Deezer also offers a family plan that allows up to six family members to share a single subscription.

- Tidal: Tidal is a high-fidelity music streaming service that offers a monthly subscription plan that allows you to access its entire library of music. You can download songs and playlists to your devices and listen to them offline. Tidal also offers a family plan that allows up to six family members to share a single subscription.

It's important to note that the compatibility and features of these services may vary, so it's always best to check with the individual services to confirm if they meet your specific requirements.