Here is a live audio feed of police radio traffic (calls dispatched etc.) for the following police departments: Boise Police, Ada County Sheriff and (Contract cities Eagle, Kuna, and Star), Meridian Police, and Garden City Police. It's amazing how busy they really are, and how much we don't really hear about in the news.
Ada County Sheriff Dispatch Live Scanner Audio Feed
There is also an app called scannerbuddy for your smart phone too.