This may not be the easiest way but if you're using Win 11, you can go to Settings - Apps - Default Apps then choose whether you want to specify specific file extensions or click on the Media Center app then change the applicable file types listed there. This is an almost painful process as it seems that you can only do one file type/extension at a time. You can also do this by going to Settings - Apps - Default Apps - Choose Defaults by file type
If you're only having issues with one or a few tile types like .aac, it may be faster to right click on one of these files and choose Properties then click the Change button to the right of the Opens With option then select MC32 then Apply and Ok.
I hope that there's an easier way but if so, I haven't found it. Things used to be so much easier when the defaults set in/by Media Center changed the Windows defaults.