Use Alternate Field if First Doesn't Exist

[ohrenkino]

See the scripting function

Scripting Functions

Mp3tag offers various built-in scripting functions, which can be used at various places in the program. These functions offer advanced display and converting options and are to be used in combination with Format Strings and Available Placeholders. General Functions Replace $replace(string,from,to) or $replace(string,from1,to1,from2,to2,...) Example: $replace(%title%,_,-) This example replaces all underscores with dashes. You can provide additional pairs of from/to as parameters. Case Co…

esp. $if2.
$if2(%albumartistsort%,%albumartist%)