Thanks for your posts!
For optimisation, VOX Player for macOS uses for playback original local files that were uploaded to VOX Cloud, if these original files still exist and VOX Cloud client knows about them. In this case, these files exist but for some reason, they are inaccessible to VOX.
We think that problem is in the Apple protection mechanism called Sandbox. Sandbox protection works wrong sometimes, especially on external disks. We have tried to fix this issue, but can’t reproduce it on our test devices
So we’ve added a simpler solution: the option to turn off the optimization mentioned above and force VOX to always play music from Cloud.
But this option will be turned off. And you’ll have to turn it on using the command in Terminal
defaults write com.coppertino.VOXCloud _dontUseLocalFiles_ 0
Then restart the VOX Cloud client. Options are saved on updates so you should set it only once, there no need to make this on every update.