Ok, here's some test results...

v42, options are set to:
Write ID3v2 Tags to Downloaded Files is ON
Preserve Existing Tag Frames in Downloaded Files is OFF
Remove ID3v1 Tags from Downloaded Files is ON (just changed this)

I download an album and the only field not populated is the genre. The track number is populated correctly from the track number field.

I think that having that "Remove ID3v1 Tags from Downloaded Files" set to OFF gives flakey results...

What would be great is to have an option to populate the track number field from the pos... I don't know if other people have badly populated track number fields like I do, so maybe this is a feature that won't be used much... No biggie if it's a biggie for you.

So basically, if you can just fix that {pos:2} problem when writing files, I'd be psyched. The genre thing can be fixed with mp3tagstudio...

- Jon