This is the 18332nd most frequent Russian word.
шумело
"Шумело" means "was making noise" or "was rumbling" in English.
In this sentence, 'шумел' describes the action of the wind making a rustling or sound among the trees.
Ветер шумел в деревьях, создавая сказочную атмосферу.
The wind rustled in the trees, creating a magical atmosphere.
Here, 'шумело' refers to the collective noise or bustle emanated by a crowd of people.
На улице шумело море людей, обсуждающих концерт.
In the street, a sea of people was bustling, discussing the concert.
In this usage, 'шумело' indicates that the radio was emitting a loud, indistinct noise.