Neutrino has been the perfect software for this because:
- It can store multiple playlists in a sidebar browser
- It can play a single track, and then stop
- A non-technical person can run it with just arrow keys and enter
- It has excellent built-in pitch and time shifting that can be setup per-track in advance
- It supports AU plugins in the output chain.
However, Neutrino appears to be abandonware. It is 32-bit, and will (presumably) stop working after Mojave.
I have found nothing that can replace it. Everything else either doesn't allow one-hits in a play list, has no realtime pitch and time shifting, or cannot be easily controlled by someone without extensive knowledge of the interface (meaning that all DJ software I'm aware of is out).
Is there anything like this out there?
[1]http://www.machinecodex.com/neutrino/index.php