Thanks for the offer, but we are covered.
It's not just the bandwidth, it's everyone wanting it at once that is the problem.
That is were you need a CDN (Content Delivery Network) like we use.
Regardless of huge powerful your dedicated server is, or how much bandwidth you have, they are not suited to even small scale streaming podcast shows like ours.
A CDN means that many servers around the world share the load and can stream the file, not only on distributed servers, but a server that more local to the listener.
We use Libsyn for this, and it's only $20/month.
http://libsyn.com/e.g. Even a fast 100Mbit connection is going to allow 1500 or so 64Kbit streaming connections/downloads at once, at best, much less than that in practice.
When we upload a new show we'll get a several thousand trying to download it at once.
And that does not include people downloading older shows a the same time.
Dave.