qt mp3 播放

.pro 添加
QT += phonon

.cpp 添加

#include <Phonon/AudioOutput>
#include <Phonon/MediaObject>

    Phonon::MediaObject *mediaObject = new Phonon::MediaObject(this);

    mediaObject->setCurrentSource(Phonon::MediaSource("D:\down\1.mp3"));

    Phonon::AudioOutput *audioOutput =

             new Phonon::AudioOutput(Phonon::MusicCategory, this);

    Phonon::Path path = Phonon::createPath(mediaObject, audioOutput);

    mediaObject->play();