Is there a replacement switch for a zing ear 208S?
If so how do I get one?

Go here - Switches available at Ken's Electronics, (Wholesale & Retail Electronic Parts) Kalamazoo, Michigan (http://www.kenselectronics.com/lists/switches.htm#Pull%20chain)
You'll need to know where the black wire goes (mine was 3) and the colors of the case. They're not all the same! Good luck.

ZE-208s is available at walmart