The downside of MP3s and digital tunes

What's interesting about iTunes' meteoric rise in popularity is that it is doing very well despite some downsides to the format and the portable devices people typically use to listen to the music. For one thing, most songs purchased on iTunes are saddled with so-called digital rights management that limits what you can do with them, including what devices you can play them on. The CDs that Wal-Mart and other retailers sell don't have DRM, so they can be ripped as MP3s and played on any digital music player.