I apologise for my ignorance but what is crunk? if your downloading stuff say artist x - song one you could always change it in library to artist x - song one [crunk] and then when you want to download some crunk it will come up on the search.
I am guessing christian punk?

Hmm, the way I see things, there should be less genres if anything! It's annoying downloading songs from the same record, and having to change the genre thanks to people quibbling over whether it's punk, punk rock or heavy rock, hell, all albums vary in style a bit from song to song, there (in my view) should be a more limited genre list to account for such discrepancies in user opinion..