Qt6 must support audio playback. 

Audio playback must supported on most available codecs, as listed here

• AAC, software codec can be shipped with Qt
• MP3, reference codec can be shipped with Qt, licensee must sort the codec license issue themselves
• PCM , i.e. no audio compression, 8 and 16bit

Audio playback must be capable to fullfill QML interface what was introduced in Qt5: https://doc.qt.io/qt-5/qml-qtmultimedia-audio.html.

Basic functionality of the playback instantiation:

• Open local audio track
• Start playing of audio track
• Stop playing of audio track
• Pause playing audio track
• Resume paused audio track
• Seek offset on audio track