Thanks Rob for the reply. Do you have any idea where I change that, as I don't know how it could have got my website name in front of the amazon link (which is where the media file is).
What I did was to
1. Under settings Powerpress - default media - I left this blank
2. I put the Amazon S3 link in the actual post under Podcast Episode.
So there's obviously something else I need to change, if you have any ideas on what I need to do, I'd appreciate it. Thanks again for helping me.
Shelley