//提供一种思路 不知是否可行。

const music = wx.createInnerAudioContext()
data: {
  list: [{
    title: "",
    src: ""
  }, {
    title: "",
    src: ""
  }],
  index: 0
},
onLoad(options) {
  this.initMusic()
}，
initMusic(){
  const {list = [], index = 0} = this.data
    startPlay()
    function startPlay(){
      music.title = list[index].title
      music.setSrc = list[index].src
      music.onEnded(() => {
        this.setData({
          index: index + 1
        }, () => {
            startPlay()
        })
      })
    }
 }