Just was at Wal-Mart and saw a 32gig SD card ( $51.99). That would hold alot of music in my ZUMO. I currently run a 8gig SD card and have about 850 songs on it. I have found that I had to create 10 folders on the card and divide the music among them in order for the music to load in the ZUMO. If I just dumped all that music on the SD card without dividing it up it just stalls trying to load it. I am tempted to try the 32gig SD card and this time create some 40 folders and to spread music evenly between. That would hold almost all of my music collection. WOW ! ! WONDER IF THE ZUMO COULD HANDLE IT ? ? ?