Thinking about switching to AP and just tried to import the OPML from my previous player. Unfortunately, I got the following error:
"An error has occurred while reading the OPML document:unterminated entity ref…
Is there a way to get this to work? I REALLY dont want to have to manually add 494 feeds!
Sounds like the OPML file is invalid. If you send it to me (info@<my username>.com), I can have a more detailed look at it. Please note that as it contains all your subscriptions, it is kind of sensitive information. I promise to delete it afterwards 
You might be able repair this yourself W3C Feed Validation Service, for Atom and RSS
Or google ‘opml validator’