(to make things easier I am just going to assume I am micing drums)
blast, my original plan with the echo was to mic my drums, send them to a Mackie mixer, then send the output to the AudioFire, then to my computer.
Also, I forgot to mention, I will be running this on a PC. I really do not have money to afford a mac because I am a Computer Science Major, and need a PC. However, I plan on purchasing a Quad Core AMD system, and hopefully 2-4gigs of DDR3 ram around Christmas time / early 2008.
The thing I am worried about is I will be running Windows Vista by then, so it will have to be Vista compatible. It could also be Linux compatibale, but I don't think I have ever seen an interface that markets Linux compatibility.