Also, use reference CDs. Buy several of the CDs on this page (http://www.digido.com/honor-roll.html?option=com_content&Itemid=54&id=46&lang=en&view=article) and rip them to high quality WAV files and listen to bits of them and compare to your mixes during the mixing process. Listen to yours...listen to theirs...repeat! I bought about a dozen of these CDs (already had several in my collection) and got most at Amazon used so they only cost a few bucks!