Currently supported tags:
Title: %title%
Artist: %artist%
Album: %album%
Album Artist: %albumartist%
Track No: %tracknumber%
Genre: %genre%
Date: %date%
Disk No: %discnumber%
Use "\" to seperate folders.
If a field is not found, it will be replaced with "" (empty). 
If output string becomes empty, complete folder structure will be used.