On the configuration tab in Maximus preferences, there is a check box to 'Close all additional processes started during launch' and 'Close specific processes started during launch (separate all entries with a comma)'. Have you tried those? I would try the first option & if it doesn't work, put the name of the executable to the jukebox software (jukboxexecutable.exe) in the list for the next option.
I'm using Jukecade with my Maximus setup & have no problems (I've never used these two options, but saw that they existed).