File naming convention for XLD encoding

xld_filename.md

Compilations:

%A - %T  -  %n - %a - %t

Albums by 1 artist

%A - %T  -  %n - %t

Ids (as per https://github.com/gmw/xld/blob/master/XLD/English.lproj/MetadataEditor.xib)

%n: Track number
%N: Total tracks
%d: Disc number (Does not seem to work)
%D: Total discs
%t: Title
%T: Album title
%a: Artist
%A: Album artist
%g: Genre
%G: Grouping
%c: Composer
%C: Comment
%I: DiscID
%y: Year
%f: Format
%i: ISRC
%m: MSCN
%o: Original file name

Metadata identifier surrounded by %[ and %] is ignored when it is empty. One can for instance use %[%D-%]%n to prefix track number with disk number only when the latter exists.

@elmimmo That's cool! Thanks for sharing.