Well, for one thing with the Mac Mini you can use an external USB DAC. In general, this will give you better sound quality than the iPod. The iPod is convenient because it's very compact compared to the Mac Mini and a DAC. The Mac Mini doesn't necessarily need a monitor, but it would sure help. An iBook may be a better option.
There are also specific recommendations for how to rip your CDs. The Wavelength Audio web site is a good place to start for this information.
There are also specific recommendations for how to rip your CDs. The Wavelength Audio web site is a good place to start for this information.