player.URL = "歌曲文件路径";
player.Ctlcontrols.play();

IWMPPlaylist playList = player.playlistCollection.newPlaylist("MyPlayList"); //新建列表
            IWMPMedia media;

            foreach (DataRow drItem in MusicSettings.DtMusic.Rows)
            {
                media = player.newMedia(drItem["路径"].ToString()); //参数为歌曲路径
                playList.appendItem(media);
            }

            player.currentPlaylist = playList;
            player.Ctlcontrols.play();    //开始播放

player.currentPlaylist.clear();

            IWMPMedia media;

            foreach (DataRow drItem in MusicSettings.DtMusic.Rows)
            {
                media = player.newMedia(drItem["路径"].ToString()); //参数为歌曲路径
                player.currentPlaylist.appendItem(media);
            }

 player.settings.volume=100;