Maybe this has been asked somewhere else, but, is there a way to change Spore's language ? I know I could change OS language settings and it would detected them, but I'd like to keep OS X in english and playing Spore in my language (italian). Is there a way to do this ?

Try the following link for how to do it for Windows..

http://forum.spore.com/jforum/posts/list/4655.page

Not sure on how it works with mac but would imagine it's something similar.