When you read articles or listen to podcasts about digital music in general or iTunes and DRM in particular, you will notice that nearly everybody talks about “digital downloads”. People never talk about just downloads, as if it was special that they are digital.
Now, when you talk about music, then the qualifier digital makes a little bit more sense since it could be analog, but even that is not true unless you listen to records or tapes. But with regard to the computer, everything is digital, the documents, the pictures, the music, and the movies, so in an effort to keep things simple, and to make them not sound more important/or more complicated then they are, lets just call it download because there is no such thing as an analog download.