As I can see in Qt6 no more Multimedia API. Am I right? Is it correct that in Qt6 for such simple task as playing sound I should look at third-party libraries now?
Qt6 is a big change so for compatibility reasons Qt does not provide this module, it will be provided in Qt 6.2 as this post: Add-on support in Qt 6.0 and beyond points out, so if you want to reproduce sounds you will have to use a third party library.
For Qt 6.2 we are planning to provide the following additional libraries:
- Qt Bluetooth
- Qt Data Visualization
- Qt Lottie Animation
- Qt Multimedia
- Qt NFC
- Qt Positioning
- Qt Quick Dialogs: Folder, Message Box
- Qt Remote Objects
- Qt Sensors
- Qt SerialBus
- Qt SerialPort
- Qt WebChannel
- Qt WebEngine
- Qt WebSockets
- Qt WebView
(emphasis mine)