Here's how you can use the music controls in the iOS 7 Control Center.
1. Swipe up to access the Control Center.
2. You'll see the music controls just under the brightness slider.
3. In the Control Center you have the following music control options:
4. Swipe down or tap above the Control Center to get rid of it after you are done.
The music controls will also show you which song is playing, and where you are in the song. Using the Control Center in iOS 7 is much faster than opening the music app to adjust volume, fast forward, etc.