The biggest problem is failover configuration and the needs of programmatic advertising insertions. So most providers will have you carry at least a 60 second buffer to start, but possibly closer to 120 seconds in most observed cases. Then as you listen an ads are inserted, or removed, the amount of delay between your audio and the live edge changes.

We could solve this, however, the royalty rates on music and other content are so high, that it would be insane to pay for that as well as the bandwidth and not get programmatic revenue back from it.