Comment has a recent article by Adrienne Dengerink Chaplin called 'What's the point?' Summer Reading on the Arts, which gives some recommendations on what is good among the huge slew of new books on theology and the arts.
I'd also like to draw your attention to this conference which David Taylor (of Diary of an Arts Pastor fame) is organizing: Transforming Culture: A Vision for the Church and the Arts (April 1-3, 2008, in Austin, TX). Tell all your artist and pastor friends about it. There's going to be a phenomenal line-up of speakers, including Eugene Peterson, and Jeremy Begbie, founder of Theology Through the Arts and a scintillating speaker. This is one not to be missed.