No offence, Reiver 2, I was a little tongue-in-cheek there!
The pronounciation is Sah-LON-i-ka indeed. The full name of the city is "Thessaloniki" (Thessalo-NI-ki), meaning "victory over the people of Thessaly", and it was established (and named thus) by King Philip II of Macedonia, father of Alexander the Great. The shortened "Salonica" came from the French "(Thes)Salonique".

I will PM you the lyrics of my song.