I found a number of HDMI to composite analog with audio converters on Amazon
http://www.amazon.com/Etekcity%C2%AE.../dp/B008FO7PQA
I bought one earlier. The ting you need to look for is to find correct aspect ration translation eg 16x9 to 4x3 letterbox or 4x3 center cut. Unfortunately the one I found only does 16x9 source HDMI to 16x9 composite. This means that you will get an anamorphically squeezed image on a 4x3 display.
But that was some time ago and perhaps there is one that now facilitates the prefered aspect ratio.