I started using dropbox (thinking of upgrading to the 50GB plan) and i'd like to move my iPhoto and iTunes libraries to the cloud for permanent backup. First, I want to consolidate my iPhoto library down, as it's taking up around 38GB. I was thinking I probably don't need super high resolution photos since I probably will never print most of them, and if I do I probably wouldn't do higher res than 5x7 or 4x6 anyway, and for that I probably won't need more than 3 to 5 megapixels and not 8-12 which many of the photos are. If I could turn 38GBs into 15GBs or even less that would be phenomenal. Then, for iTunes, I figure 128kbps or 192kbps is enough. I do like music, but I am just a casual listener who will mostly listen on headphones or at semi normal volumes at home. I have music and audio from all kinds of sources on there, a bunch of purchased ones, some ripped CDs, some downloads of random crap (including some university lectures). I really wanted to convert them all to a uniform format, maybe two (one for music, higher bit rate, one lower bit rate). Any good programs out there for batch conversions? I have about 2,500 tracks.