Hi there,
please see
http://help.algoriddim.com/customer/en/portal/articles/755495-pre-cueing-with-external-audio-devices
and http://help.algoriddim.com/customer/en/portal/articles/579241-preview-a-song-through-headphones-pre-…
about how to pre cue with external audio devices or through headphones.
Cheers,
Lukas E.