I doubt that you can download. It appears to be a streaming server. There is also a 4-client limit but it looks like you can clear your client list and start over (probably to accomodate travelling users who access from different locations frequently).
One of the current setbacks (beta version) is that it can only stream mp3 content. Anyone who is now using AAC won't be able to use it yet. A future feature is that it will convert non-mp3 content to mp3 and stream on the fly.