The lovely voices you refer to don't speak the street names, at least on the systems I've seen. They're just .wav recordings, and have to be recorded by someone. It's very, very difficult, if even possible, to record every street name in any country. The way to get them is to use speech synthesis. I have Mapopolis on my Palm, and have several recorded voices, both sexes, various nationalities, and they sound good, but can't speak street names. The speech synthesis program does. It depends on what you prefer.