Put All Audio Questions Here

I've begun working on my first .GBS conversion, and I have a few questions.

First off, I saw that this was covered briefly earlier in this thread, but when applying replaygain info to tracks, is there any way to prevent native clipping from a .GBS file? (I guess that would be the best way to describe it.) I did a replaygain scan with Foobar2000 v0.9.4.2 and noticed all tracks are above the ideal 1.00 dB track gain value, not to mention one of the tracks being at 11.15 dB... So, I guess my question is, since I can't apply replaygain to the .GBS file itself (to my knowledge) after converting the tracks to .FLAC (.WAV can't store replaygain info, AFAIK), can I still apply replaygain? Or, would it not make a difference at all?

Second, are there are any recommended freeware audio editing programs you would suggest?

Finally, I've never really done any audio editing before, so any suggested guides/instructions/tips for the audio editing process would be appreciated. Thanks.

Edit: I'm using Audacity to do some experimental editing. I've ripped/encoded a sample track, if anyone wants to critique it and give me any suggestions. Thanks, again.

Kaeru.mp3

Jam it back in, in the dark.