MP3 Shaker is an Adobe Air application, can play your audio files. It is very simple to use. When it opens, select a directory of MP3s (it only plays MP3s), and be patient if its a directory with thousands of MP3s it will take a moment to load.
A window will come up with a list of all the MP3s, double click one to play, or hit the play button, or next. You can close the windows and just have the player up, it shows the name of the song if ID3 tags are available.
If you shake it (drag it left and right really fast) it will shuffle to another song (just like the new iPods). Click the green light on the top right to close.

Requirements:
* Adobe Air

The license of this software is Freeware, you can free download and free use this music&mp3 player software.