Occitan is spoken in southern France parts of Italy and a small part of Spain It is spoken as a first language by roughly 1 million people If you are interested in learning the language our audio CD course is certainly a good way to learn Occitan words

What is the correctly punctuated version of this sentence?
Occitan is spoken in southern France, parts of Italy and a small part of Spain. It is spoken as a first language by roughly 1 million people. If you are interested in learning the language, our audio CD course is certainly a good way to learn Occitan words.