Popular hosting company DreamHost has launched a new service called Files Forever (available to Dreamhost customers during beta phase). Files Forever is similar to iTunes, but with improved and added features. Users can sell, loan, and download (as many times as they please) their files via the service, so long as they have no DRM. Dreamhost is handling the payment processing and host the file(s) permanently.
Read more about it on the DreamHost blog entry!