You've got the lyrics wrong ;] They go like this: "Vecherjaj, Rado, mari, vanka izlizaj, Da si te pitam, mari, ti chula li si"
Translation:
"Dine, Rado*, I say**, go out
So that I [can] ask you if you have heard"
*Rada --> a female name; we say Rado when addressing a girl named Rada (like "hey, Rada!")
** I always thought that in the folk songs they say "Mari" when they're addressing a young girl, but my dictionary says that it means "I say" 0.o. However, you can never use it when addressing a male.
Ungir kallar, kátir kallar, gangiđ upp á gólv dansiđ lystilig!