Music Server vs Computer?

Currently streaming music from a PC to a modded Airport Express that's connected to my pre. The Wyred4Sound music server looks really inviting. Appears to do everything my PC does. Ripping cds sounds like a breeze and storage capacity is great (1T or 2T). All I have to do is link it with a DAC. Are there any disadvantages, to include SQ, to using a music server vs using a PC/MAC? Seems to me that they both use HDs for storage, but that SQ with the MS might be better because streaming is eliminated.