Combination of decade and yearOnly Tag option

[audio_elf]

I've tried a number of control points (primarily use Naim control point but also Linn Kinsky and Kazoo and Marantz HiFi apps on various iPads and iPhones). I think I've even deleted and reinstalled on at least one device since trying this.

I've also deleted the flac-*.mcache files and restarted.

Its one of those things I wasn't worried about till I tried it; now annoyed i can't get it to work :-) I'm sure there is something obvious somewhere...