The plugin doesn’t support remote connections at all unfortunately, but what you might be able to do, is mount the remote filesystem locally as a network share, and use that as the uploads directory / use the upload URL option in wp-admin to direct it to load it from the other domain.

one tip, is that if the directory that the files reside in, is within the uploads folder, then the plugin/WordPress doesn’t attempt to copy it elsewhere, so it “should just work” – so just mount the remote filesystem as something like wp-content/uploads/podcasts/ and it might just work..
You’ll have to give it a try and see what the result is unfortunately as I’m not confident on it.

That is a brilliant idea. I quite honestly hadn’t even thought about that as an option.

That being said, I’m sort of stuck “at the moment” with another server. Is it possible for your plugin to give the potential to access multiple locations? A pseudo piggy-backing of plugin instances? I would certainly be willing to make a donation for the creation of / update to the plugin if it is in the realm of possibility.