void msnd_fifo_free(msnd_fifo *f);
int msnd_fifo_alloc(msnd_fifo *f, size_t n);
void msnd_fifo_make_empty(msnd_fifo *f);
-int msnd_fifo_write(msnd_fifo *f, const char *buf, size_t len, int user);
-int msnd_fifo_read(msnd_fifo *f, char *buf, size_t len, int user);
+int msnd_fifo_write(msnd_fifo *f, const char *buf, size_t len);
+int msnd_fifo_read(msnd_fifo *f, char *buf, size_t len);
int msnd_wait_TXDE(multisound_dev_t *dev);
int msnd_wait_HC0(multisound_dev_t *dev);