Static vs. Dynamic
Last week I thought about the static and dynamic concerns of FANS.FM and realized something big: this system was largely static. All public listener facing assets could be static files. The permalink for a broadcast, the player and the embed script could all be precomputed.
The true dynamic need for the system is in creating and managing the live broadcast. The host needs to interact with a live interface to manage the broadcast and incoming callers. This will represent a very small percentage of the traffic FANS.FM will receive.