Comment 8 for bug 1921541

Update on this specific error, which I think should be kept separate from the two recent discourse reports:

* https://mixxx.discourse.group/t/macbook-pro-runs-very-hot-when-using-mixxx/22382/
* https://mixxx.discourse.group/t/trouble-with-mixxx-on-mac-book-pro/22408

My setup: use mixxx actively on mac 1, clone music folder and mixxx library + prefs folder to mac 2 and use mixxx there as music player with tags, loops etc from mac 1.

Results in:
a) Mixxx on mac 2 thinks the music files are located at /Users/UsernameMac1/MusicFolder which of course is incorrect
b) sandbox dialog is shown
To fix this:
* Mixxx > Preferences > Library > Relink (process may never finish or get stuck)
* restart Mixxx
* rescan Library

Results in:
a) Library working again as expected
b) Sandbox warning no longer showing

The issues around wording and functionality of the sandbox dialog remain however. I am not sure if for my specific edge case, the sandbox dialog is expected or unexpected.

Also I do not know if when shown for correct cases it does what it is supposed to do or not.