[itsme]

No, it's not by time in seconds. It seems to be something like "search for string containing the specified characters" as it is the case for other fields. It's not usable at all for Duration.

My use case as a background info:
I want to use MSPs calculation of setlist's total duration. That requires that Duration is specified for all songs. If I don't know a song's duration (yet), I want to enter a default duration like 3:00, 3:01 or the like and want to reserve this default value for estimated durations. So I want to search for songs that already have that default value as a "real" duration and I want to search songs with Duration = 0:00 (not entered).

It also could be achieved by this feature request:
- don't enter a default value for Duration in the database
- make "not specified" and 0:00 two different database values for Duration
- allow specifying a default value for Duration that is used ONLY when a totol Duration of a setlist is calculated and a song's Duration is "not specified"