Doch doch mein Freund
Open any DAW ( ableton, logic, Cubase, etc, etc, )
Create a 1 hour long, empty clip.
Or record silence, then strech it out to a hour.
Name it : silent track
Export it
Put it between your loops
I did that before I go to sleep
1 hour silence
Then the subs
Works perfectly
Update: put your titels in a Daw. Let 1 hour between the tracks and export that as 1 file