I've been writing a bassline for the Christmas thing, as well as one of hurdcaca's songs that doesn't have any yet. But, as I record it, I really can't get it to sound good. After about 10 seconds, the obvious occurred to me.
I haven't got an amp model. Does anyone know any good ones I can use with Audacity?

Without one, my bass can only make 1 type of sound....and that makes me sad.........

Of course, I may not actually know what I'm talking about. So, just in case, what I mean is this; a digital effect that acts like an amp, and has all the knobs and such that my actual amplifier has. I hope you can understand what I mean.

http://www.samash.com/catalog/categorysub.asp?CategorySubID=669&departmentid=2&sourcetype=categorysearch

ther are a bunch of these I don't use them I just DI a bass into a mixer, slap on some compression and that's about it. Latetly I've just been using the bass sounds on my keyboards and writing them out in the midi sequencer software.

Native Instruments
Guitar Rig is meant to be amazing! I saw someone had exclaimed in a post somewhere on bandAmp "Thank God for Guitar Rig"
There is a Demo flying around the web, but I haven't yet found a key for it, it packs in after a month.
But it was amazing while it lasted!

Can Audacity deal with VST Plugins? Maybe kvraudio or the sonicspot can be of any use?

Ok I found some VST plugins using the links you guys showed me....but how I earth do I use them? i found something that said I needed to copy the files into Audactiy's plugin directory, but that didn't do a thing.

You also need to download the audacity plugin(I cant remember what its called) anyways it will allow you to use them....

Hey Oldies I come up with the same question! lol

I found Guitar FX 3
Might it be what your looking for?

[edit]
You might like it and you may get it to work!!!
I cant get the guitar signal from my soundcard to go through the Guitar FX program, it was the same with Guitar Rig, but Guitar Rig is also a VST Plugin so it would work on pre-recorded tracks in Cubase (Audacity)