The average Joe may not have heard of this slick company, but if you're a real music buff, you'll know what these guys do.
In short - they make your sound sound better! You can browse their website and see their product catalog. The one I'm hooked on to is Izotope Ozone (currently running version 4.03 at the time of writing this blog). I use it at home, not with a sound editor, but with Winamp!
I could upload a preset here for Izotope Ozone, but not sure if that's acceptable. The software doesn't come cheap (around $250 or so), and you may find other plugins in the market that do a similar job (or better) but this is a 6-in-one plugin module. Beat that!
Oh - if you're not into multiband compressors, don't fret - I'll put up a small blog post sooner or later explaining the use of multiband compressors. You may want to check up Wikipedia and other websites. A quick summary would be: they make your sound clear and loud. They can be used to distort or enhance certain frequencies too - practically every radio and television station uses these (hence, the music on these channels sound better than they tend to do on your PC).
While I don't condone piracy, you can get a torrent from different sites for the key-gen (you can download the EXE file from Izotope's website, for free, but it'll run in trial mode till you key in your license)