diff --git a/dlls/mmdevapi/mmdevapi.h b/dlls/mmdevapi/mmdevapi.h
index db91e333cc8..d694a3930aa 100644
--- a/dlls/mmdevapi/mmdevapi.h
+++ b/dlls/mmdevapi/mmdevapi.h
@@ -16,20 +16,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "unixlib.h"
+
 #include <wine/list.h>
 
 extern HRESULT MMDevEnum_Create(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
 extern void MMDevEnum_Free(void) DECLSPEC_HIDDEN;
 
-
-/* Changes to this enum must be synced in drivers. */
-enum _DriverPriority {
-    Priority_Unavailable = 0, /* driver won't work */
-    Priority_Low, /* driver may work, but unlikely */
-    Priority_Neutral, /* driver makes no judgment */
-    Priority_Preferred /* driver thinks it's correct */
-};
-
 typedef struct _DriverFuncs {
     HMODULE module;
     WCHAR module_name[64];
diff --git a/dlls/mmdevapi/unixlib.h b/dlls/mmdevapi/unixlib.h
index 163272c4398..97a35ffbc4d 100644
--- a/dlls/mmdevapi/unixlib.h
+++ b/dlls/mmdevapi/unixlib.h
@@ -22,6 +22,14 @@
 
 typedef UINT64 stream_handle;
 
+enum driver_priority
+{
+    Priority_Unavailable = 0, /* driver won't work */
+    Priority_Low, /* driver may work, but unlikely */
+    Priority_Neutral, /* driver makes no judgment */
+    Priority_Preferred /* driver thinks it's correct */
+};
+
 struct endpoint
 {
     unsigned int name;
@@ -211,7 +219,7 @@ struct set_event_handle_params
 struct test_connect_params
 {
     const char *name;
-    HRESULT result;
+    enum driver_priority priority;
 };
 
 struct is_started_params
@@ -273,6 +281,16 @@ struct midi_notify_wait_params
     struct notify_context *notify;
 };
 
+struct aux_message_params
+{
+    UINT dev_id;
+    UINT msg;
+    UINT_PTR user;
+    UINT_PTR param_1;
+    UINT_PTR param_2;
+    UINT *err;
+};
+
 enum unix_funcs
 {
     process_attach,
@@ -307,4 +325,5 @@ enum unix_funcs
     midi_out_message,
     midi_in_message,
     midi_notify_wait,
+    aux_message,
 };
diff --git a/dlls/winealsa.drv/alsa.c b/dlls/winealsa.drv/alsa.c
index 7ac404fd6a4..c3daf25c85e 100644
--- a/dlls/winealsa.drv/alsa.c
+++ b/dlls/winealsa.drv/alsa.c
@@ -2463,6 +2463,7 @@ unixlib_entry_t __wine_unix_call_funcs[] =
     alsa_midi_out_message,
     alsa_midi_in_message,
     alsa_midi_notify_wait,
+    NULL,
 };
 
 #ifdef _WIN64
@@ -2880,6 +2881,7 @@ unixlib_entry_t __wine_unix_call_wow64_funcs[] =
     alsa_wow64_midi_out_message,
     alsa_wow64_midi_in_message,
     alsa_wow64_midi_notify_wait,
+    NULL,
 };
 
 #endif /* _WIN64 */
diff --git a/dlls/winealsa.drv/mmdevdrv.c b/dlls/winealsa.drv/mmdevdrv.c
index 8c3d4c0340f..ad322ccfa96 100644
--- a/dlls/winealsa.drv/mmdevdrv.c
+++ b/dlls/winealsa.drv/mmdevdrv.c
@@ -216,14 +216,6 @@ BOOL WINAPI DllMain(HINSTANCE dll, DWORD reason, void *reserved)
     return TRUE;
 }
 
-/* From <dlls/mmdevapi/mmdevapi.h> */
-enum DriverPriority {
-    Priority_Unavailable = 0,
-    Priority_Low,
-    Priority_Neutral,
-    Priority_Preferred
-};
-
 int WINAPI AUDDRV_GetPriority(void)
 {
     return Priority_Neutral;
diff --git a/dlls/winepulse.drv/mmdevdrv.c b/dlls/winepulse.drv/mmdevdrv.c
index 78aad939198..d6765d4e26c 100644
--- a/dlls/winepulse.drv/mmdevdrv.c
+++ b/dlls/winepulse.drv/mmdevdrv.c
@@ -56,14 +56,6 @@ static unixlib_handle_t pulse_handle;
 
 #define NULL_PTR_ERR MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, RPC_X_NULL_REF_POINTER)
 
-/* From <dlls/mmdevapi/mmdevapi.h> */
-enum DriverPriority {
-    Priority_Unavailable = 0,
-    Priority_Low,
-    Priority_Neutral,
-    Priority_Preferred
-};
-
 static HANDLE pulse_thread;
 static struct list g_sessions = LIST_INIT(g_sessions);
 static struct list g_devices_cache = LIST_INIT(g_devices_cache);
@@ -493,10 +485,10 @@ int WINAPI AUDDRV_GetPriority(void)
     struct test_connect_params params;
     char *name;
 
-    params.name   = name = get_application_name(FALSE);
+    params.name = name = get_application_name(FALSE);
     pulse_call(test_connect, &params);
     free(name);
-    return SUCCEEDED(params.result) ? Priority_Preferred : Priority_Unavailable;
+    return params.priority;
 }
 
 static BOOL get_pulse_name_by_guid(const GUID *guid, char pulse_name[MAX_PULSE_NAME_LEN], EDataFlow *flow)
diff --git a/dlls/winepulse.drv/pulse.c b/dlls/winepulse.drv/pulse.c
index a75184e712a..cbd9b3b97ae 100644
--- a/dlls/winepulse.drv/pulse.c
+++ b/dlls/winepulse.drv/pulse.c
@@ -773,7 +773,7 @@ static NTSTATUS pulse_test_connect(void *args)
         pa_mainloop_free(pulse_ml);
         pulse_ml = NULL;
         pulse_unlock();
-        params->result = E_FAIL;
+        params->priority = Priority_Unavailable;
         return STATUS_SUCCESS;
     }
 
@@ -839,7 +839,7 @@ static NTSTATUS pulse_test_connect(void *args)
 
     pulse_unlock();
 
-    params->result = S_OK;
+    params->priority = Priority_Preferred;
     return STATUS_SUCCESS;
 
 fail:
@@ -848,7 +848,7 @@ fail:
     pa_mainloop_free(pulse_ml);
     pulse_ml = NULL;
     pulse_unlock();
-    params->result = E_FAIL;
+    params->priority = Priority_Unavailable;
     return STATUS_SUCCESS;
 }
 
@@ -2392,6 +2392,7 @@ const unixlib_entry_t __wine_unix_call_funcs[] =
     NULL,
     NULL,
     NULL,
+    NULL,
 };
 
 #ifdef _WIN64
@@ -2734,14 +2735,14 @@ static NTSTATUS pulse_wow64_test_connect(void *args)
     struct
     {
         PTR32 name;
-        HRESULT result;
+        enum driver_priority priority;
     } *params32 = args;
     struct test_connect_params params =
     {
         .name = ULongToPtr(params32->name),
     };
     pulse_test_connect(&params);
-    params32->result = params.result;
+    params32->priority = params.priority;
     return STATUS_SUCCESS;
 }
 
@@ -2835,6 +2836,7 @@ const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
     NULL,
     NULL,
     NULL,
+    NULL,
 };
 
 #endif /* _WIN64 */