Hissing Sound

Hello folks,
I’ve been trying to record some tunes with my bass guitar and electronic guitar via M-audio Fast Track and Audacity 2.0.5. All projects have a hissing background sound.Here is an example. https://www.dropbox.com/s/mao5ib4h7qxv2hd/Hissing.wav

I appriciate your help and sorry if this has been asked before but i couldn’t find any post related with my problem.

I don’t hear anything I would characterize as “hissing” in the sample you posted. There is
a bit of buzz that I suspect power line related, but it is hard to tell. Could you post a
sample that has several seconds of what should be silence before you start playing?
(It’s useful to have both so we can gauge the magnitude of the problem).

Does your guitar have “humbucker” pickups? http://en.wikipedia.org/wiki/Humbucker