I've been using iTunes for last couple of years and I've a library of about 1300 tracks, mostly using 320 AAC that I've ripped myself from CD's. A couple of weeks ago, I decided to go the lossless route, and re-imported about 500+ tracks using Apple Lossless - but after listening to the iPod on holiday, I can't tell any noticable difference so I've decided to reclaim the HDD space and go back to 320 AAC. BUT - some tracks that I've downloaded at 128 MP3 sound better than the lossless tracks, and I can only assume that the quality of the original recording and the software used to rip the track has a good deal of influence on the quality of the resulting files. I've heard about some other ripping programs that seem popular and was wondering if there'll be any noticable difference if I go this route and then import the file into iTunes, rather than letting it do the ripping for me? 320kbps is fine for my needs, just confused as to why sometimes tracks with "inferior" bitrates sound better... thanks in advance.