The data savings of Opera Max for Android may make the most sense when you're watching cat videos, but music matters, too -- listen to a few albums and you'll easily burn through several hundred megabytes. Thankfully, Opera might just have you covered. It just trotted out an update to Opera Max that can optimize your music streaming data by as much as 50 percent in apps like Pandora, Slacker or YouTube Music. The trick is on-the-spot conversion of audio from MP3 or MP4 to the more data-efficient AAC+ format. Yes, that transcoding theoretically affects quality ever so slightly, but it might be worthwhile if you can listen to a few more tunes during your commute.