the calm and proud voice repeats about Komarov making the way to Comminism for the whole mankind [edit: apparently Komarov himself in official radio appeal]. this is intersected with some voices that could not be understood.
the way to communism mantra is obviously copy-pasted several times, some times partially, just to make some russian soudns, like this: "Komarov prokladyvaet put k Kommunizmu!" - "phshphs-bla!-bla!" - "-mmunizmu!" - pshshsh!blabla! - "prokladyvaet put k Kommunizmu!"
imagine how Russians watch movies where Hollywood tries to show something Russian, labels or written names. mostly it is just a meaningless set of letters. this is also looks like a bullshit that some CIA guys presented to their local Brezhnevs to justify their work