Roger, you can let iTunes convert your AIFF files to MP3 and save about 8 gigs. I have approximately the same type stereo equipment as yours and the MP3s sound great. I feed two large Jensons to my studio, two large Pioneers in my hot tub room and two small lawn speakers. Sounds great! xxx I don't have exotic stereo setup; but it is probably barely above average. Fairly good Sony reciever and the spearkers are in wood cabnets. The sound quality is good from the mac. My files are all AIFF straight from my CDs to iTunes; I don't have any MP3s. I have a 6 CD player in the stereo I run the Mac to but I never use the CD player anymore; For at last two years. My active iTunes is 650 songs at 13gig. I have about twice that or more but I didn't bother to put it in iTunes because I don't listen to them. I will definitly be using Apples losless. It doesn't cost much to try it this way. Sound quality is very subjective but I think most people will find this setup with Mac's built in sound is just fine; but you are really using your stereo. Many of my friends are long time musicians and they generaly like my setup. Remember; It is running through the stereo and the stereo delivers the sound. The Mac is acting like a tape deck or CD deck. The Mac port works fine. A sound card would be a waste because; Again, you are using the stereo. Roger _________________________________________________________________ FREE pop-up blocking with the new MSN Toolbar get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/