#define BACKEND_COMMAND 1 /**< Execute a command */
#define BACKEND_NETWORK 2 /**< Transmit RTP */
#define BACKEND_COREAUDIO 3 /**< Use Core Audio (Mac only) */
#define BACKEND_COMMAND 1 /**< Execute a command */
#define BACKEND_NETWORK 2 /**< Transmit RTP */
#define BACKEND_COREAUDIO 3 /**< Use Core Audio (Mac only) */