Hi,
I have a fairly decent cable internet and folks downloading from my 320's ftp server only get about 200kb to 250kb downloading. I am not sure if this is going to be similar to your setup but I think it will be. These kinds of speeds are not going to be useful for streaming. A little trial and error will tell you for sure pretty quick though. You might also try using the web file server feature to see if that is any better but I don't use it and have no way to test. My users just download via ftp and then play with whatever.
If you do get this to work, please post your methods. Good luck