Jim,
the way I do it is that I upload the file, let's say it's an mp3 file, to a folder on my server.
Then on the page where I would want my site visitors to download it, I post a link to the mp3 file (e.g. mysite.com/mp3/filename.mp3).
Then, I just give them instructions on how to download, i.e. right-click and "Save Target As".
Not fancy, I know, but it works
Sherif