The Opener Property
Opener property is assigned to an audio track at your own preference. If you use rotate playlists and the DJ-Serv Scheduler, then the Opener property is usually used to indicate that this song has a "strong" start and is suitable for scheduling after a noisy jingle in your playlists.
You can set or remove the Opener property from any audio track in DJ-Serv by opening the Audio Properties Editor and either ticking or clearing the Opener check box.
The opener property becomes important if you are creating carefully crafted rotate playlists, and you want to ensure a "kick ass" track will always play after a "kick ass" jingle. It is an advanced feature.