Some template questions..
Design and Skin Customization
1. This will depend on what template your trying to add the image to and the reason your wanting to.
2. Not 100% sure without checking, but I think the variable you'll want to add to your row template is $item.audio_rank.
You can stick a debug in your row template and get a list of available variables.
https://www.jamroom.net/the-jamroom-network/documentation/development/1477/debug
Hope this helps!