Donald Mastronarde also has some pronunciation practice here: http://socrates.berkeley.edu/~ancgreek/
He outlines what pronunciation scheme he is using somewhere on his website, I believe.
You may be opening a can of worms if you start wondering about what is "correct" and "learning bad habits". The answer is there are certain conventions in certain scholarly groups about what pronunciation is used. Linguists also have a fairly good idea about what the individual phonemes of ancient Greek were (although there are some disagreements). Unfortunately, there's a huge gap between "the pronunciation that people usually use" and "what scholars think ancient Greek sounded like". In addition, "ancient Greek" literature spanned a more than a few centuries, and several different dialects, so it's not just a question of "what did it sound like", but "what did it sound like in a particular place at a particular time."
Also there's another thing you might want to be aware of: names of well-known Greek people or places often have a traditional form and pronunciation in modern languages which may include stress patterns or sounds that are dramatically different than the classically "correct" pronunciation, which can be a bit disorienting sometimes.
Not discouraging you in any way, just know that the answer can be as simple or as complicated as you want...