diff --git a/firmware/export/wm8721.h b/firmware/export/wm8721.h
new file mode 100644
index 0000000..fb9cc53
--- /dev/null
+++ b/firmware/export/wm8721.h
@@ -0,0 +1,108 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Dave Chapman
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef _WM8721_H
+#define _WM8721_H
+
+/* volume/balance/treble/bass interdependency */
+#define VOLUME_MIN -730
+#define VOLUME_MAX  60
+
+extern int tenthdb2master(int db);
+extern int tenthdb2mixer(int db);
+
+extern void audiohw_reset(void);
+extern void audiohw_enable_output(bool enable);
+extern int audiohw_set_master_vol(int vol_l, int vol_r);
+extern void audiohw_set_nsorder(int order);
+extern void audiohw_set_sample_rate(int sampling_control);
+
+/* Register addresses and bits */
+#define LOUTVOL                 0x02
+#define LOUTVOL_LHPVOL_MASK     0x7f
+#define LOUTVOL_LZCEN           (1 << 7)
+#define LOUTVOL_LRHPBOTH        (1 << 8)
+
+#define ROUTVOL                 0x03
+#define ROUTVOL_RHPVOL_MASK     0x7f
+#define ROUTVOL_RZCEN           (1 << 7)
+#define ROUTVOL_RLHPBOTH        (1 << 8)
+
+#define AAPCTRL                 0x04  /* Analog audio path control */
+#define AAPCTRL_DACSEL          (1 << 4)
+
+#define DAPCTRL                 0x05  /* Digital audio path control */
+#define DAPCTRL_DEEMP_DISABLE   (0 << 2)
+#define DAPCTRL_DEEMP_32KHz     (1 << 2)
+#define DAPCTRL_DEEMP_44KHz     (2 << 2)
+#define DAPCTRL_DEEMP_48KHz     (3 << 2)
+#define DAPCTRL_DEEMP_MASK      (3 << 2)
+#define DAPCTRL_DACMU           (1 << 3)
+
+#define PDCTRL                  0x06
+#define PDCTRL_DACPD            (1 << 3)
+#define PDCTRL_OUTPD            (1 << 4)
+#define PDCTRL_POWEROFF         (1 << 7)
+
+#define AINTFCE                 0x07
+#define AINTFCE_FORMAT_MSB_RJUST(0 << 0)
+#define AINTFCE_FORMAT_MSB_LJUST(1 << 0)
+#define AINTFCE_FORMAT_I2S      (2 << 0)
+#define AINTFCE_FORMAT_DSP      (3 << 0)
+#define AINTFCE_FORMAT_MASK     (3 << 0)
+#define AINTFCE_IWL_16BIT       (0 << 2)
+#define AINTFCE_IWL_20BIT       (1 << 2)
+#define AINTFCE_IWL_24BIT       (2 << 2)
+#define AINTFCE_IWL_32BIT       (3 << 2)
+#define AINTFCE_IWL_MASK        (3 << 2)
+#define AINTFCE_LRP_I2S_RLO     (0 << 4)
+#define AINTFCE_LRP_I2S_RHI     (1 << 4)
+#define AINTFCE_DSP_MODE_A      (0 << 4)
+#define AINTFCE_DSP_MODE_B      (1 << 4)
+#define AINTFCE_LRSWAP          (1 << 5)
+#define AINTFCE_MS              (1 << 6)
+#define AINTFCE_BCLKINV         (1 << 7)
+
+#define SAMPCTRL                0x08
+#define SAMPCTRL_USB            (1 << 0)
+#define SAMPCTRL_BOSR_NOR_256fs (0 << 1)
+#define SAMPCTRL_BOSR_NOR_384fs (1 << 1)
+#define SAMPCTRL_BOSR_USB_250fs (0 << 1)
+#define SAMPCTRL_BOSR_USB_272fs (1 << 1)
+/* Bits 2-5:
+ * Sample rate setting are device-specific. See WM8731(L) datasheet
+ * for proper settings for the device's clocking */
+#define SAMPCTRL_SR_MASK        (0xf << 2)
+#define SAMPCTRL_CLKIDIV2       (1 << 6)
+
+#define ACTIVECTRL              0x09
+#define ACTIVECTRL_ACTIVE       (1 << 0)
+
+#define RESET                   0x0f
+#define RESET_RESET             0x0
+
+/* SAMPCTRL values for the supported samplerates (24MHz MCLK/USB): */
+#define WM8721_USB24_8000HZ     0x4d
+#define WM8721_USB24_32000HZ    0x59
+#define WM8721_USB24_44100HZ    0x63
+#define WM8721_USB24_48000HZ    0x41
+#define WM8721_USB24_88200HZ    0x7f
+#define WM8721_USB24_96000HZ    0x5d
+
+#endif /* _WM8721_H */
diff --git a/firmware/sound.c b/firmware/sound.c
index 335aa1a..67890f2 100644
--- a/firmware/sound.c
+++ b/firmware/sound.c
@@ -782,7 +782,7 @@
             break;
     }
     return result;
-#elif defined(HAVE_TLV320) || defined(HAVE_WM8751)
+#elif defined(HAVE_TLV320) || defined(HAVE_WM8731)
     int result = 0;
     
     switch(setting)