However, if you want to try the app without joining the Insider program, you can install the new Media Player in the stable channel through a trick from Ghacks.
There is a way to install the new Media Player in Windows 11
Note: The new Media Player replaces the Groove Music app, so if you’re using it, it won’t be available after installing the new Media Player. Users also need to be using the latest version of Windows 11 i.e. 21H2 Build 22000.376, for these steps to work.
How to Install New Media Player in Windows 11
1. Access https://store.rg-adguard.net/ and paste the Groove Music app’s Microsoft Store listing address into the text box. The address is https://www.microsoft.com/en-us/p/groove-music/9wzdncrfj3pt.
2. Click the drop-down menu on the right side, it says RP and select the Fast channel.
3. Continue by clicking the checkmark button next to it and a long list of links will appear. Find the file called Microsoft.ZuneMusic_126.96.36.199_neutral_~_8wekyb3d8bbwe.msixbundle about 35MB to download.
Find the exact file that is about 35 MB
Note: There is a similar file with number 54.70, which weighs about 92 MB. Do not download this version, as it cannot be used to update Media Player.
4. Run the downloaded file and the operating system will show a pop-up asking if you want to update from Groove Music to Media Player. Click the update button to confirm the action and wait for it to finish the process.
Click the update button so that the new Media Player replaces the old Groove Music
The new Media Player is now ready to use, users may notice the program’s title says Media Player Preview because it is still being tested. However, now this application has worked on the stable channel of Windows 11, it is only a matter of time before Microsoft makes official news.