IF( <actions> )

My Action Group has a block of Actions that I want done only if a certain tag is present (non-empty). How best to code this? Thanks.

Good question. I've thought about this also and don't have a good way of doing it.

A nice Mp3tag enhancement would be a new action type of 'Exit action group', where you enter an expression to be evaluated. If it evaluates to positive, then the remaining actions in the group would be skipped.

Action type: Exit action group
Conditional: $neq(%myfield%,1)

BTW, what is the best way to test for the existence of a field?

$if(%field%,y,n)

Surely that gives a false negative on an empty field.