There are all kinds of ways the program content gets delivered to our radio stations. Many programs come from a producer's website, some from sources like Radio4All, Internet Archive, PRX Public Radio Exchange and many more including Drop Box.
In fact, a new program we are thinking about carrying on KDX is delivered by Drop Box, except that KDX does not have a Drop Box account. Frankly, I am not sure I want to tie in with yet another delivery service, we already have so many.
Have you used Drop Box? Are there any problems with it?
I've used dropbox several times to download content for the station. Never had to create an account to download from the link included from the producer. I think you have to create one to upload. Not 100% sure. But it's always worked for me to download using the links.