I currently am using my computer to record with, so far it has everything I need but I am going to upgrade the ram soon. I am running 2 gigs and I am going to jump to 4. I have a wide range of equipment from synths to turntables, live intruments, mics, digital multitracks and a multitude of processors and rack gear that through an assortment of mixers. I tie all this into one master mixer which feeds into the sound card on the computer. The master is only a 6 channel with 2 mic channels but it serves just fine as I am tieing into that through 5 other mixers which connect to my actual devices. The 6 channel goes into the line in on the computers PCI Soundblaster Audigy card, it seems to be a pretty decent card and my recordings thusfar have been suitable. What I am wondering is should I invest in a PC Interface like an M-Audio or one of these high-end PCI cards with all the different inputs on it? I don't really need the inputs at all seeing as I can get those from any of the mutiple mixers I have. But will I notice a greater sound quality using a better PC interface. It seems like I have everything I need and I do not really care about Pro-Tools so I am not hurting for an M-Audio box. Just trying to understand the advantages of buying one these "PC interface" versus carrying on like I have been.