Yes you understood the issue thanks! Your patch worked though: when MusicBee restarts it saves the filepath as blank (so it goes to the root of my Fiio X1).
Now I have an issue, but I think it is because I did the patching part correctly. I extracted the files you gave me and copied/replaced them into the Musicbee Programs x86 folder. Now when I launch MB, I get a warning saying that the publisher of the exe is unverified, do you want to run? I click yes, then Avast pops up and says this file could be dangerous. I click no. Then, MB will finally open and work correctly, and leave the filepath blank.
So, how do I fix the patching thing on my end so that I don't get that error every time I open MB? Haha