Multiple Libraries Via Multisqueeze Does Not Seem Possible

I want to have a „his“ and a „hers“ library, with trivial effort required to switch between them. I tried to achieve this using Multisqueeze. I successfully ran two players simultaneously. But the user interface (Webadministration) that sets the path to the library on the thumb drive applies to both players. I have installed the Multiple Library plug-in and the Custom Browse plug-in but they are not relevant to my intended configuration. I cannot find a way to have a separate library for each player unless I set up two Raspberry Pi computers. Am I missing something?

For anyone who is interested in my needs: I have a media room with a tablet to control the music. This tablet is a wireless-charging, Wi-Fi tablet, an ancient HP Touchpad running Android. This acts as a super remote control for selecting and playing music. Another HP tablet is kept near the great room. I have bought a second Raspberry Pi. I installed Volumio on it. I have set it up to shuffle tracks, because Volumio does not seem to be configurable to shuffle by album, the preference of both myself and my wife. I bought a simple radio-controlled „mini relay wireless switch“ for $12 to switch one room’s audio between the two player outputs while allowing the media room to always be on the „his“ system. By pressing the „A“ or „B“ button, one can switch between the player shuffling through his versus hers music. It works quite well except that Volumio does not meet my needs as well as LMS, especially LMS using the now-out-of-support Orange Squeeze controller software on a tablet. I would prefer to run with one Raspberry Pi instead of two for simplicity of hardware and maintenance, and I would prefer to use LMS and the same interface for both, too. I suppose I can set up both Raspberry Pi computers with Max2Play/LMS but then switching servers on the control tablet is too complicated to meet my wife’s needs when using Orange Squeeze. Squeeze Cntl does allow easy server switching but it does not look nearly as nice as Orange Squeeze.