Highlights from today’s media coverage:
1. The Justice Department is looking into allegations that Apple tried to prevent music labels from giving exclusives to Amazon, according to several sources.
2. Conde Nast introduced the new Wired iPad app, calling it “a revolution.”
3. According to one tracking service, ad spending rose in the first quarter — the first such increase since 2008.
4. Who will win “American Idol”? With Simon Cowell making his farewell, does anyone care?