I installed Multisqueeze with two players (1. Hifiberry DAC plus 2. bluetooth / Pulse).
Installation worked fine.
Both options (DAC & bluetooth) work fine when in single use.
Under the menu Multisqueeze I can’t start both squeezelight-players. Errormessage: Trying to start – not successful (Versucht zu starten … NICHT Erfolgreich).
Please try running one player in the Audio Player menu and one in MultiSqueeze. Usually your setup should work as well, however, the preinstalled instance of Squeezelite on the Audio Player is already in the system. Please also make sure you followed the instructions in the Bluetooth menu regarding Pulse. Also, here is a video I made on using MultiSqueeze, please check whether you followed these steps:
You can find the log files for all MultiSqueeze players in the Debug Info window on MultiSqueeze. Same goes for the audio players in the Audio Player menu.
Please also try the steps I recommended to hans above.