search for "dc art" or diamond cut audio restoration tool
remove the crackle in cooledit, use automatic settings
remove single pops by using fill single click now in the click/pop removal tool (highlight the pop first)
use continuous noise removal for "background noise" (usually a hiss across most if not all freqs)
it helps to get a section(med-long) of the noise without any music or whatever, so be sure to record the silence before samples/music...
Sincerely,
-Walter Leland Kronkite
sometimes u can remove his by using a compressor, or a number.. better still graphical compressor (amplitude->dynamics) and compress the lower end noises, so that you cut the quiet parts and leave the loud parts.. (usually for drums) this can remove presence or reverb
dcart is the dopeness though (fbi used to use this, or may still use the latest version of it)