Which basically I think means, yes. You do have to do this procedure for each
file type. I also have always hoped there was a way to just change the default
player, period, but I don't think there is or at least I haven't found it yet.
Changing the player for one file type only does it for that
You can do this for all files, but the process is a bit odd. Find a file of the
type you want associated with a new app, and press command-i. Once the
information window opens, find the disclosure triangle named something like
opens with and expand it. Set the app you want, then hit the button