1] Open Windows Media Player in Library mode.
2] Select Music Library.
3] Now if you hover the cursor over the title song you will find the Preview option
4] If you play the Preview song you will also find the Skip option and a song timer.
If you click on Skip option -the song will be skipped 15 seconds ahead.
5] To automatically preview songs do the followings:-
a] Select Tools in Windows Media Player
b] Click Options
c] Select Library tab
d] Check the box against Automatically preview songs on title hover.
e] Click OK