在qt5.1下的，主要实现音乐播放，但可以做视频播放。对于新人来说是个可以值得去学习。同时扩展性很强，发挥你的思维可以实现一个 很好的media。-In qt5.1 under, the main music player, but you can do video playback. For newcomers, was something that could be worth to learn. While highly scalable, play your thinking can a