The feat we want is that, when the playlist is created, in can produce a sub-playlist. A playlist within a playlist.
The purpose for this is to have a stinger played during the scheduled playlist time. For example, tonight is for "Light Rotation". While the playlist is up, we want a stinger saying its "Late night mellow love songs" set to play every 3 songs interval during in the "Light Rotation" scheduled time only.
Or a playlist can be targeted the other playlists and set it to play during 3 songs interval or time.
If that feat is already available or there is a tweak in order to achieve that, please enlighten us. We want that feat.