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3.5mm Mono Jack to 2xRCA Jack Adapter - Straight
3.5mm to 2 RCA Adapter Stereo Mono AUX to Female Male RCA Converter Splitter | eBay
6 RCA Mono to Stereo Cable RCA F to Dual RCA Males | Computer Cable Store
Mono Audio Adapter - 3.5mm Plug to RCA Jack | Computer Cable Store