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If you want full control over the iPod, then yes, you need music link. What I recommend you do is either wait for the dash trim from Metra or other companies and install a iPod compatible deck. A cheaper alternative is to buy the wireless remote control for your iPod. They usually come with a velcro strap that you can use to strap it to your steering wheel. Use that in conjunction with the AUX jack and you are good to go.