Entrainment is most strongly related to light exposure, meal timing, and resource access.
I struggle to find anything related to audio.
Additionally, your headphones/phone/speakers do not have the ability to generate a 1hz tone with any power as to be noticeable or effective in any way. If anything can be tied to 1hz in the audio you're listening to in these videos it would be higher frequency tones, chords, or sounds that have a pattern that repeats once per second.