Qualcuno può tradurre questa frase albile in inglese per favore? Ogni sito di traduzione che ho visto dice che significa che la band ha adottato un ragazzo tailandese ma che non suona bene (Wikipedia della band ceca Jaksi Taksi)

Yes, they adopted a Thai boy, but in the old sense of the meaning “to adopt”. “Na dálku” means like “from afar”, meaning they adopted him by sending him money and supporting his life, rather than physically taking him in.

Your translation is basically correct. Except the sentence contains “na dálku” which means remotely. So they are sending money to the Thai boy and probably exchanging some letters too

Btw it contains link to the source so you can check for yourself

That’s what it is, but it’s a “long distance adoption”. It usually just means financial aid so the kid can go to school etc.