void uaudio_set_format(int rate, int channels, int samplesize, int signed_);
void uaudio_set(const char *name, const char *value);
char *uaudio_get(const char *name, const char *default_value);
void uaudio_set_format(int rate, int channels, int samplesize, int signed_);
void uaudio_set(const char *name, const char *value);
char *uaudio_get(const char *name, const char *default_value);