Apple users were more likely to listen to public radio and classical music, while Android users were into conservative talk and Spanish-language programming.

FORBES: TuneIn Says Apple, Android Are Different -- When It Comes to Music, Radio

Listeners can register for a trial to listen to SiriusXM Internet Radio and get access to commercial-free music, premier sports, live news, comedy, talk, and entertainment from SiriusXM.

ENGADGET: Sirius XM details GoogleTV app ahead of the I/O party

With middle and high-school students, parents should listen closely to what kids say about the tragedy, encourage them to talk about any specific reactions or fears, and provide reassurance whenever possible, says Geri Kerr, a Morristown, N.

WSJ: How to Talk to Your Children About the Shootings