[Q] S3 USB analog audio

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http://forum.xda-developers.com – I own a Galaxy S3 phone from Verizon, and I also own a 2012 Chevy Impala with the stock head unit. The head unit has a 3.5mm input jack in it, and I currently use a 3.5mm male to 3.5mm male cable to feed audio to my head unit from my phone's headphone jack. I was looking today through my box of cables, and I found this cable with a micro-USB plug on one end, and a full-size USB plug and a 3.5mm mini-jack plug on the other end. I want to use this cable to charge my S3 and feed the head unit audio through the USB port on the bottom of my phone. (Technically the cable will be plugged into my car (HowTos)