Kindle Fire App installation help

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I recently got my hands on a Kindle Fire. I am unable to access the Amazon store without masking IP etc so is the there anyway to get apps for it?

I have tried Getjar and it wont let me install anything it only gives me a prompt to get the mobile app and then wont let me proceed any further.

Is there anything I can do to get apps without jail breaking it?

Any help is greatly appreciated