QUOTE=soulspaz;864032] I dont have the iphone 4 snap in adapter... when I get this can music be played from my phone to my sterio?

I dont have Navigation, not yet... that is phase II

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Yes, it can be done, but there is nothing out there to buy off the shelf.
This was an early test cradle I made.
Stage 1 (proof of concept)
I can plug the iphone in and it connectes to my Intravee (ipod interface), it allows charging and playback of music (stereo) through the cars audio system, has ID3 info on screen and is fully control-able via the MFSW and/or screen buttons.
There is a video on youtube that I made (but it wont let me include a link here), so search in youtube for
"
Iphone 4/4s Modded snapin with an intravee connection"
Stage 2 will be video output to screen too.