US law differs a lot from everywhere else and copyright is territorial.

However the UK has just decided that copyright infringment takes place at the server (although an infringment by authorising the download might take place where the download is received) so if a copy of your narration is made outside the USA (Sweden has wide personal use laws) and then uploaded to an EU based server for streaming only, you might have a leg to stand on. I'm not guaranteeing a win, but it's something to think about.

The other angle is that your contributor agreement for your narration might not hold water to vest the rights in your narration (not the same thing as what you narrated) in jurisdictions outside the USA.