Coming from a WinAmp background, the best mp3/ogg/wma player right now for me is XMPlay (http://www.un4seen.com/xmplay.html) which can be used without installation and provides enough features to suit somebody who likes to play some tunes in the background while working. For those not reading between the lines, it means somebody who doesnt really care about the visualization because it meant to be for listening and not for watching.