diff --git a/sound/synth/emux/emux_voice.h b/sound/synth/emux/emux_voice.h
new file mode 100644
index 0000000..67eb553
--- /dev/null
+++ b/sound/synth/emux/emux_voice.h
@@ -0,0 +1,88 @@
+#ifndef __EMUX_VOICE_H
+#define __EMUX_VOICE_H
+
+/*
+ * A structure to keep track of each hardware voice
+ *
+ *  Copyright (C) 1999 Steve Ratcliffe
+ *  Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <sound/driver.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <sound/core.h>
+#include <sound/emux_synth.h>
+
+/* Prototypes for emux_seq.c */
+int snd_emux_init_seq(snd_emux_t *emu, snd_card_t *card, int index);
+void snd_emux_detach_seq(snd_emux_t *emu);
+snd_emux_port_t *snd_emux_create_port(snd_emux_t *emu, char *name, int max_channels, int type, snd_seq_port_callback_t *callback);
+void snd_emux_reset_port(snd_emux_port_t *port);
+int snd_emux_event_input(snd_seq_event_t *ev, int direct, void *private, int atomic, int hop);
+int snd_emux_inc_count(snd_emux_t *emu);
+void snd_emux_dec_count(snd_emux_t *emu);
+int snd_emux_init_virmidi(snd_emux_t *emu, snd_card_t *card);
+int snd_emux_delete_virmidi(snd_emux_t *emu);
+
+/* Prototypes for emux_synth.c */
+void snd_emux_init_voices(snd_emux_t *emu);
+
+void snd_emux_note_on(void *p, int note, int vel, struct snd_midi_channel *chan);
+void snd_emux_note_off(void *p, int note, int vel, struct snd_midi_channel *chan);
+void snd_emux_key_press(void *p, int note, int vel, struct snd_midi_channel *chan);
+void snd_emux_terminate_note(void *p, int note, snd_midi_channel_t *chan);
+void snd_emux_control(void *p, int type, struct snd_midi_channel *chan);
+
+void snd_emux_sounds_off_all(snd_emux_port_t *port);
+void snd_emux_update_channel(snd_emux_port_t *port, snd_midi_channel_t *chan, int update);
+void snd_emux_update_port(snd_emux_port_t *port, int update);
+
+void snd_emux_timer_callback(unsigned long data);
+
+/* emux_effect.c */
+#ifdef SNDRV_EMUX_USE_RAW_EFFECT
+void snd_emux_create_effect(snd_emux_port_t *p);
+void snd_emux_delete_effect(snd_emux_port_t *p);
+void snd_emux_clear_effect(snd_emux_port_t *p);
+void snd_emux_setup_effect(snd_emux_voice_t *vp);
+void snd_emux_send_effect_oss(snd_emux_port_t *port, snd_midi_channel_t *chan, int type, int val);
+void snd_emux_send_effect(snd_emux_port_t *port, snd_midi_channel_t *chan, int type, int val, int mode);
+#endif
+
+/* emux_nrpn.c */
+void snd_emux_sysex(void *private_data, unsigned char *buf, int len, int parsed, snd_midi_channel_set_t *chset);
+int snd_emux_xg_control(snd_emux_port_t *port, snd_midi_channel_t *chan, int param);
+void snd_emux_nrpn(void *private_data, snd_midi_channel_t *chan, snd_midi_channel_set_t *chset);
+
+/* emux_oss.c */
+void snd_emux_init_seq_oss(snd_emux_t *emu);
+void snd_emux_detach_seq_oss(snd_emux_t *emu);
+
+/* emux_proc.c */
+#ifdef CONFIG_PROC_FS
+void snd_emux_proc_init(snd_emux_t *emu, snd_card_t *card, int device);
+void snd_emux_proc_free(snd_emux_t *emu);
+#endif
+
+#define STATE_IS_PLAYING(s) ((s) & SNDRV_EMUX_ST_ON)
+
+/* emux_hwdep.c */
+int snd_emux_init_hwdep(snd_emux_t *emu);
+void snd_emux_delete_hwdep(snd_emux_t *emu);
+
+#endif