Hi,
I've really been putting this bug in the back burner because of social anxiety (lol). I've created lots of crash reports because of this.
I've used to use StationPlaylist which adds APE tags to any files it plays. Some specific wacup change on a certain release caused those files to become unplayable. Wacup instantly hangs and crashes when trying to play them.
My suspicion is due to weird configuration of both ID3 and APE tags included in the file. For example, binary data of the time the song last played. If I remove or mess with tags, the file becomes playable on wacup again.
I attached an example file.
I am using latest public build and I also tried it in safe mode. I have no way of checking if its fixed in the latest private beta build.