This MP3 player was written to be a small compact player, to play a wide range of audio formats and to be small enough to fit on a disk.Compatible with the following file formats: *.mpg;*.mp1;*.mp2;*.mp3;*.ogg;*.wma;*.asfTo use, simple double click on the program. Buttons are all standard music playing buttons, but if you are unsure of what a button means, simply hover the mouse above the button and a tooltip will appear telling you what the button is.