Download an app like Duomi (or qq music I guess) you can download or stream songs (tons of songs, serious selection) and the screen will scroll through the lyrics as you listen.
Another really good one to check out is Xiami (虾米), although on iPhone it’s only available in the Chinese App Store (virtually everything on there is pirated). I logged into a friends Chinese iTunes account on my phone just to get the app. It’s like a Chinese Spotify, it streams virtually everything imaginable, including Western artists. Lyrics are built in and when I ran the app for the first time it notified me of an offer to allow unlimited 3G streaming for 8/yuan a month on China Unicom. If I didn’t already have/use the paid version of Spotify I would probably pay that 8/yuan a month and be use it to stream music to my phone anywhere.