What's the difference between "add to library" and "import"? I've got a ton of music that i'd like to start putting on my macbook hdd but i'd like to do it in the most efficient way possible. Most of my treasured collection is on my old PC hdd but i don't know the difference between add to library and import. I've got itunes set up to import as 'aac' but all my music was mp3 format and i understand how to convert to aac, i just want to know the best way to put them on my computer. I notice that when itunes imports music it creates a folder for the artist and a subfolder the album. Coming from a windows environment, it'll take a little getting used to but out of curiousity does anyone have their setup where it's just my music folder full of music and itunes hunts it down in there? Or is that not the best way to go? Any help would be great. Thanks!