Top List chart by Genre
Design and Skin Customization
use {debug} to make sure that there is a value at {$item.audio_genre} where you're trying to use the {jrCore_list} call. If there is no value in that variable your jrCore_list call will fail for sure.
You're going to need a way to choose a genre, so probably that's going to come from the url
site.com/the-genre-choosing-page/genre=punk
if you had a URL like that then inside the the-genre-choosing-page.tpl file the {debug} panel would show you that you have the work "punk" available on {$_post.genre}, so use THAT in your jrCore_list call.
--edit--
Docs: "{debug}"
https://www.jamroom.net/the-jamroom-network/documentation/module-developer-guide/1477/debug
updated by @michael: 08/06/18 09:13:28PM