Audio I/O is a complex topic, which scares away many inspired musicians who are into programming (or programmers who are into music). Let’s try making it look less complex and see how audio works on each modern desktop platform. Our show case today will be a simple beeper. Remeber that annoying thing inside your PC boxes producing the irritating buzzing sound? It’s long time gone, but I suggest to sumon its soul and make a library that plays beeps across all the platforms.