If you live in Rome, or are planning to move there for a year or so, are a native English speaker and an actor/actress, then maybe you should take a look at the Miracle Players site.
Here is an except from their About the Group page:
The Miracle Players is a non-profit organization whose main objective is to promote the culture of antiquity in historical locations (with a smile!). The group was formed in May 1999 and has already established a reputation for producing original, funny and quality theatre. The key members are all English-speaking actors, resident in Rome, from America, Australia, England, Iran, Italy and Scotland.
The theatre troupe has already developed a following amongst the English-speaking theatre public in Rome and various associations including the British Council, various private and public schools, the Tourist Board of Rome, Rome City Hall, the Lazio Regional Administration and the Italian Ministry of Culture.
We believe our achievements and success are due to the harmonious blending of the diversity of the members themselves, their shared professionalism and their love for creating and performing.

Stop reading, start speaking
Stop translating in your head and start speaking Italian for real with the only audio course that prompt you to speak.
It looks as though only ‘real’ actors are able to join, but I’m not all that sure about this. I may fire them off a mail and see how they reply. Or you could simply contact them:
Ass. Cult. Miracle Players
Piazza Confienza 3
00185 Rome, Italy
+39 06 70393427