I´m not exactly an expert in USB recording, as I´ve just started off recording with a Mackie Spike USB interface, but from what I´ve read (and some general computer knowledge...) your problems might be due to one of the following:
A) USB connections take up relatively much processing power. With a slow CPU, you might experience high latency or even glitches - what kind of CPU do you have? 1GB of RAM does not help with a P2/300 :mrgreen:
B) The backing track as well as your guitar playing is monitored through the Audigy? Try installing some ASIO driver for your Audigy card. I think all audigy cards are shipped with it, but maybe this is an optional/manual install. If you already have ASIO drivers... well, forget B) :grin:
C) Maybe your motherboard has a VIA chipset? It´s notorious for its USB problems and can be picky about external devices attached. Installing the latest chipset drvers might help, but not necessarily...
Well, for now that´s all I could think of. Tell us about your configuration, then maybe some more things come to mind!
Greetings,
Carsten
(Who is experiencing no latency problems :twisted: )