Alright, this is how my setup is:
I got an EXTUSB 3.5 with usb cable adapter from SEDIO. They dont have that right now (or I'm looking at the wrong site). I have that plug connected into the EXTUSB/MiniUSB splitter so I have my phone charging at the same time. It works wonders.
*NOTE* I have not tried this on my vogue, but did on my Titan. I did have a 2.5 to 3.5 adapter and used the included MiniUSB/headset splitter but only got Mono audio where only one side of the cars speakers would play. No matter what, couldn't get it to play on the other speakers. I could have the 3.5 adapter partially out to have audio on both sides but it would either come out or activate voice recognition.