Tvad, the post is about using a computer as a music server, nobody has mentioned anything about using an iPod.
Pardales, the only advantage of the AAC format is that it can compress down to smaller files sizes. Compared to non-compressed or Apple Loseless there is a penalty in sound quality. It's a value judgement whether that trade-off is acceptable, but if you're using a 500Gb HD where you can store approximately 700 (non-compressed) to 1,400 (Apple Loseless) CDs. Is your music collection so large that it cannot fit on one or two 500Gb drives?
Pardales, the only advantage of the AAC format is that it can compress down to smaller files sizes. Compared to non-compressed or Apple Loseless there is a penalty in sound quality. It's a value judgement whether that trade-off is acceptable, but if you're using a 500Gb HD where you can store approximately 700 (non-compressed) to 1,400 (Apple Loseless) CDs. Is your music collection so large that it cannot fit on one or two 500Gb drives?