Downloadable files in Marketpress – behaviour

Hi –

I’m seeing slightly odd behaviour with mp3 audio downloads in MarketPress on this site. I’ve stored my mp3 downloadable products at a third-party host, as they are very large (200MB+), and so I don’t want them in my WordPress install. However, in the first month of running this site, I am seeing that these external files seem to have been copied into my WordPress wp-content folder each time a purchase has been made – so I have 5 or 6 versions of the same file in my WordPress install taking my WP directories over 1GB in size.

I wouldn’t have thought this should be happening? Don’t users just access their downloadables from the external address provided for the product.