Polish pronunciation is actually incredibly easy, there's a direct mapping (a mathematical function) from a simple partition of letters to phonems. Unlike in English, where we have weirdnesses like "vehicle" or "colonel". There's a price to pay for quick and massive import of words, lack of centralized language development coordination body and conquering the global stage of accents, I reckon.
Example for the town: Mszczonów -> Mshchonooff (Americanized).