My 2009 has two pigtails in the glovebox, one for iPhone and the other is a low-tech analog auxiliary input. Thats what you are talking about? If your Samsung has a headphone output then you should be able to plug right in to that bypassing your FM transmitter.
But another thing to consider is that M-B may offer an alternative pigtail with USB (offered for the 2009). That might make a better digital connection. It might allow access to your Samsung as if it were a USB hard drive.
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