Hey so I know some my options are purchasing a sylfex aux mod, GROM aux input, getting a new head unit or using a fm transmitter. However, I came across this on eBay.
http://www.ebay.ca/itm/USB-AUX-In-Ad...ZXcMwd&vxp=mtr
Says it will work on a Mazda 3, sorta looks like a GROM aux input adapter. Anyone tried it? Thinking of buying it asap.