 Any sound card that is supported by the operating system is usable in Mixxx.Mixxx supports various software APIs for using sound cards on different operating systems, namely ASIO, WASAPI, and DirectSound on Windows; OSS, ALSA, and JACK on Linux; and CoreAudio on Mac OS X, all via PortAudio.For external hardware control, Mixxx can support any MIDI or HID controller as long as there is a mapping to tell Mixxx how to interpret the controller's signals.