I just ordered a new Mac Book Pro (4GB RAM, 320 7200 RPM hard drive). My iTunes library is about 200GB because I ripped all my CDs in Apple Lossless. Will it be ok if I move my 200GB Library to my MBP's 320GB 7200 RPM hard drive? Or will I notice a big decrease in performance? I also have about 20GBs of pictures and movies, but music is more important. The other option I have is to play my iTunes Library from an external hard drive using eSATA (FireWire 800 por is taken), but it would really suck to move around an external and connect it every time to listen to iTunes.