As of this writing, free Real One Player can be downloaded from here. However, you should note that there is also a non-free version, that real.com will try to sell you. In an attempt to coerce you into buying the non-free version, real.com often moves the download location, in order to make it more difficult to find. So if the link above doesn't work, then you may have to look around a bit at http://www.real.com to find it.