Amazon.com: 3.5mm Stereo Male to Dual 3.5mm Mono Male Audio Cable, 1ft 3.5mm 1/8" TRS Male to 2 x 3.5mm 1/8" TS Male Y Breakout Cable Splitter Adapter for Headphone, Speaker :
Adapt 2.5mm Stereo Plug to Larger Stereo 3.5mm Audio Jack
Insignia™ 3.5mm Stereo Splitter Cable Black NS-M35SPT - Best Buy