I think folders should be an option. Yes, many times songs have “albums” tags. OK. But some legal, home-ripped music does not. If you’ve made a library w/o Album tags (you used folders) then it’s an army of work to add album tags. I had a Zen Nano Plus which used folders. Within a folder, the Nano Plus sorted by track (if not empty) or file name (if track = empty). It worked fine. A folder also lets you put things together which are not songs - episodes of a talk show, etc. If you can sort by Artist, Album, etc, it seems like a small step to sort by Folder as another option.