Does anyone know of a free library that allows you to play audio files

[AlitCandle]

I would want to add sound to the program like in the video.

http://www.youtube.com/watch?v=2-am2t8-HCk

[j2NvC542]

Take a look at SFML. (http://www.sfml-dev.org/)
It has libraries for audio, graphics and more and is also object-oriented.

[CLman94]

I recommend Un4seen Developments Bass audio library.

http://www.un4seen.com/

[CLman94]

I was not advertising

[o1vk4iN6]

OpenAL (open audio library) ?