I have a lot of CD's (thousands) encoded at AAC files. I'm about to move and would like to leave my CD's in storage but travel with a copy of them all, encoded losslessly, on an external drive. However - I anticipate buying the next gen of iPod (with more storage hopefully) and want to keep my AAC's so I can travel with them in my iPod. Is there an easy way to create 2 iTunes music folders and then switch between them (lossless for fidelity, AAC for portability). If I create a new iTunes music destination folder and then re-encode my CD's to that using the lossless codec can I just switch between the folders at will or will I have to re-import the files each time I switch? If I was to encode lossless files into the same iTunes music folder would the files be listed twice and, if so, could I automatically create lossless and AAC playlists (using some kind of sort by encoding format?) Thanks in advance. I hope Apple make this easy - I can't be the only audiophile who'd like to take all his music with him. NB: I fixed it - sort by 'kind' and create parallel playlists within the same folder. Sweet. Thank goodness for my LaCie 500 Gig extremes - I'm going to fill one of them I think.