iTunes radio stops streaming on its own ...

It seems to happen randomly. Usually an iTunes radio station will stream for hours, but sometimes it will simply stop for no apparent reason. When it stops it usually stops repeatedly after playing for only a few minutes. It's not the "rebuffering stream" message; it simply stops as though I pressed the stop button. Pressing play restarts the stream as though nothing had happened.

So is this an ISP issue, or the radio streaming source?

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Orignal From: iTunes radio stops streaming on its own ...