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Note: Mixing multiple audio sources to the same output isn't supported until 8.3.46
BrightSign XT4 - Models: XT244, XT1144
BrightSign XD4 - Models: XD234, XD1034
BrightSign HD4 - Models: HD224, HD1024
BrightSign LS4 - Models: LS424
BrightSign XT3 - Models: XT243, XT1143
BrightSign XD3 - Models: XD233, XD1033
BrightSign HD3 - Models: HD223, HD1023
BrightSign LS3 - Models: LS423
BrightSign HD-OPS - Models: HO523
BrightSign DSM - Models: HS123
BrightSign 4K - Models: 4K242, 4K1042, 4K1142
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