ADDED: Ira Glass says the loss of the distributor PRI won't change anything from the listeners' perspective:
Most listeners I meet seem utterly unaware of who our distributor is, or they think – mistakenly – that we’re part of NPR. NPR is the company that puts out Morning Edition and All Things Considered and many fine programs. But there are several other companies that distribute public radio shows around the country. Local public radio stations get shows from all of them.
We’ll announce sometime soon what our new plan is to distribute the show to radio stations.