Resources
Here's a site to convert French text to phonetic symbols.
Here's a site that will pronounce what you write.
Here's a presentation with tips for improving your students' pronunciation.
References
Coveney, Aidan. 2001. The Sounds of Contemporary French: Articulation and Diversity. Elm Bank Publications.
Dansereau, Diane. 2005. Savoir dire: cours de phonétique et de prononciation. Houghton Milton.
Léon, Pierre and Monique Léon. 2008. La prononciation du français. Paris: Armand Colin.
Mougeon, Raymond, Terry Nadasdi and Katherine Rehner. 2010. The Sociolinguistic Competence of Immersion Students. Bristol: Multilingual Matters.
Price, Glanville. 1991. An Introduction to French Pronunciation. Oxford: Basil Blackwell.
Walker, Douglas C. 2001. French Sound Structure. Calgary: University of Calgary Press.
Walker, Douglas C. 1984. The Pronunciation of Canadian French. Ottawa: University of Ottawa Press.