Ted,

Strong melody for the lyric. Good job with that.

As far as Audacity...I use it all the time. there is a noise removal option. However, it leaves you will a different noise! Thus, I never use it. To get rid of any background noise before and after the recording, I simply highlight the a couple of seconds before and after the actual song (header and trailer), go to the "Amplify" effect and move the slide all the way to the left, which gives you total silence for those parts. however, in mid-song, the noise removal option is annoying.

i do not know if you have heard any of my recordings or not. But, I NEVER mic my amp. I plug it straight into the "mic" input on my computer and record directly. I use the "headphones" jack on my amp as an audio out. You pick up no extraneous noises what-so-ever that way.

Since you are using a mic, rather than direct input, my guess is that the rumbling is from the lower EQ ranges. they tend to amplify that kind of noise. You can use the "Equalization" effect in Audacity to reduce the low EQs.

Just some thoughts for you. Good luck with your song!

Alan