So we’ve established you bought the device with the Raspberry Pi CM4 bundled. As you may know, the CM4 is an aarch64 device, which means it can only run programs built for aarch64 or any.
Another thing the community would like to tell you is that the OS included with the kit is frankly terrible. You may want to ask help from somebody more experienced to help you set up a different OS to a microSD. This post has links for alternative community OS’s you may prefer to use.
You can look into this thread for help to set up Sunvox for your device. As a warning, you may need to learn to install programs from source, which does require you to pay attention to steps and possible issues that may occur when setting up the program.