It's pretty simple: create the .rm audio file, and upload it wherever you want on your webserver. I'll assume the file is called "myfile.rm", and that it has been uploaded to
www.somesite.com/myfile.rm. Then, create a file called "myfile.ram" (not the "a" there in the middle...not just "rm")...enter this into the file with your favorite text editor:
pnm://www.somesite.com/myfile.rm
Then, just link to "myfile.ram" anywhere on your site, and clicking on it should allow it to stream. I dunno if it would work ANYWAY, but I've read that the .ram file with that little "pnm" thing sort of redirects it to the other file. Odd, I know.

With .wma files, just upload them and link to them...the streaming should handle itself. At least, it works for me.