I'm not sure if this is still necesary since I haven't saved anything in real audio format in years. But, if you are using a .ram file and want it to stream, the URL on your page should start with "pnm://" instead of "http://". For example, the link to download would be pnm://www.yourserver.com/download.ram
Depending on the bandwidth limitations of your server space, you may not want streaming to happen so easilly since, for the less computer savvy, a number of users will just stream from your site every time they want to hear your work even if it has already been downloaded to their machine.