Q: I am running iTunes on my HP lappy, using an Airport Express connected to my old school home stereo, directing traffic with the Remote app on my iPhone 4. Now my music library is burgeoning and I need to move my iTunes library off my hard drive, mostly for performance reasons. I am considering the best hardware—as in very small and portable—so I can always have the library with the laptop. So far an SD card looks like my best option,…
