Playing an MP3 from iCloud

Hi to everyone, I’m quite new to ionic and I need help to understand how to move.
I created a simple app on iOS that plays mp3 when put in the local assets of the app (copied during installation). Very nice and quite easy (thanks to a tutorial).
Now I’m trying to access iCloud to play an mp3 from a directory up there but I have, at least, two problems:
1- maybe I need to have a payed developer account to enable iCloud (or CloudKit?) in Xcode?
2- I don’t know how to point to a remote file… how is the code to be implemented for that?
Thank you in advance for your help!
Have a nice weekend,