Music on a FX-cg10 (Casio PRIZM) calculator

This video showcases an audio player for the FX-cg10 and cg20 graphing calculators also known as the Casio PRIZM series. To my surprise, the volume was much higher than the music players available on the FX-9860G and TI-84 Plus models. There is some static like on those models, though, and for some reasons the music player stops playing at 30 seconds or so. The song being played is La Porte du Soleil from http://djomnimaga.bandcamp.com/ and the audio player can be downloaded here: http://www.omnimaga.org/index.php?topic=12700