Here is how I used JGroups (2.6.1) to distribute and replicate files retrieved from a feed, so there is no single point of failure:

http://www.nabble.com/Re%3A-Streaming-Message-Transfer---p14510203.html

Here is a reply from Bela Ban basically confirming that the scheme works (via configuring a TCP stack):

http://www.nabble.com/Re%3A-Streaming-Message-Transfer---p14512866.html

The whole thread:

http://www.nabble.com/Streaming-Message-Transfer---td14476343.html

JGroups rocks!

Update on 13Nov08: Or does it ? After using JGroups for about a year now, it seems JGroups can be quite unreliable when the number of nodes in a cluster grow beyond half a dozen of nodes, especially if they span across a WAN. Or maybe it's just me ?