if you love sounds clean sharp warm sounds, if you are a little “audiophile”, if sounds are giving you moods then use winamp or windows media player with the adaptX plugin add some of these , get yourself a very very good soundcard , an amplifier and 2 speakers from here or from here or here , or maybe here and you will have impressive results . else go for this .
choice of the right speakers is a problem so read some articles from here . hope it helps.