You do not need an HDMI audio adapter. Instead, detach the RCA cables from the 3.5mm jack on the cable connected to the USB transmitter. Connect the 3.5mm jack, into the 3.5.mm port on the back of the Xbox 360
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You do not need an HDMI audio adapter. Instead, detach the RCA cables from the 3.5mm jack on the cable connected to the USB transmitter. Connect the 3.5mm jack, into the 3.5.mm port on the back of the Xbox 360