artist - album - track# - trackname.mp3

No, no, no, no, no !

You can't put the artist first. What happens if you have a compilation with multiple artists on it?

Yes, that's right, your album is no longer grouped correctly if you sort the files alphabetically.

This is precisely why the format currently used by the download feature is correct.

So, I'm not going to give people the freedom to change the output naming format until I have a signed affidavit from each and every one of you acknowledging that I'm correct, and that you'll never do something this stupid .