JoergAtGithub

> Mixxx is awesome. And you just made it a bit more awesome!

I merged in the changes from #13355, but I noticed, that the memory consumption of ControlDoublePrivate is much bigger in this Main branch, than in the 2.4 branch. 2.4: ...

> I assume you build main with Qt6 and 2.4 with Qt5. Yes, I did!

@daschuer Friendly Ping

Welcome at Mixxx! As a first-time contributor we need you to sign the [Mixxx Contributor Agreement](https://docs.google.com/forms/d/e/1FAIpQLScC9QG327sjLL0eWftmfGUasxFFLxg6LCXJ2xHDYRzFIRqyiw/viewform?formkey=dEpYN2NkVEFnWWQzbkFfM0ZYYUZ5X2c6MQ) and comment here when you have done so. It gives us permission to distribute...

Merging this PR broke the main branch CI: ``` Error: D:\a\mixxx\mixxx\src\preferences\dialog\dlgprefrecord.cpp(129): error C2220: the following warning is treated as an error Warning: D:\a\mixxx\mixxx\src\preferences\dialog\dlgprefrecord.cpp(129): warning C4996: 'QCheckBox::stateChanged': Use checkStateChanged() instead ```...

Let's look again on the use cases for stem loading, and deck clone/splitting out of this PR. Let me list all uses cases I know: 1. Loading mixed track of...

> > So we may add global flags CO to decide which Stems should be loaded. However I am afraid the user will always forget to adjust this field before...

Above I listed 8 use cases for advanced stem loading COs. Since nobody brought up another use case relevant for loading, I guess it's complete. Of the list, the cases...

I don't think, that it will sound good to switch from the mixed stereo to the 5th track in a stem file. This is because the later is mastered by...