I answered a similar question some time ago about what Roman Latin sounded like, and the answer is mostly the same:

No, not really.

Yeah they're different languages, but the situations are pretty much the same; We can come up with estimates through reconstructions, but we can't really know the exact pronunciations with certainty.

It's 1am here but have a look at that answer and then if you have follow up questions feel free to ask them here and I can respond in detail in the morning.