Sorry if this is a common question, but I'm very curious... So, I have an iMac with my main iTunes music and movie collection as a primary media device. I'd like to keep my Macbook Pro free of all media, as I use it for business and school, so I went out and bought a Western Digital Passport to transfer all my iTunes from my iMac to it as an external media device for my MBP. When I hook it up and open iTunes, it automatically finds the movies, but not the songs on the WD Passport. What am I doing wrong? Is there any possible way to simply plug in the external hard drive and have my songs pop up as if they were simply a part of the computer? Again, sorry if this has been asked/is a stupid question. I'm just curious.