This collection provides bindings to the cross-platform “Portaudio” library, capable of playing sound on Windows, OS X, and Linux.
This planet package provides more or less raw bindings, and it’s definitely possible to crash racket using these functions. See the clements/rsound planet library for a higher-level, believed-safe interface.
This package includes the portaudio dynamic libraries for Windows and Mac, where I believe that users will have trouble compiling and installing such a package. On Linux, users must install it themselves.
In addition, there is a small C library that provides interface code. This is provided in compiled form for all platforms, though come to think of it, I may have omitted 32-bit linux. Hmm...