One of the Best audio player Windows 7 will definitely be Winamp i have used it for so long as i can remember ok not that long but maybe more like 12 years almost from the beginning. The player has all the settings you will need in a audio player on Windows 7
You can even hook up you laptop to your car and play Winamp through your car stereo.
That’s if you have an aux input. Best thing i like about the player is that it has a nice equalizer
that you can fine tune to your preferred listening choice, it has lots of themes also to choose from. The Winamp player is also very stable I have played with it music at a few venues and it doesn’t have the problem of crashing maybe the older versions but latest versions on Windows 7 are like I said very stable.