I had to take a 4 hour road trip this past weekend.... so I tried using Orb to stream music from my home computer (I have all my cds ripped to my NAS at home)...then streaming music from Orb over bluetooth A2DP (I am running 3.0 beta 5) to my indash car stereo... worked beautifully... even at speeds from 70 to 100 -- I mean 55 to 65. Its great to have access to all my cds without having to decide ahead of time which ones to load on my iPhone...
Its great to have access to all my music...and not worry about how much storage I have on my iPhone... One of the reasons I love my iPhone....