diff --git a/Makefile b/Makefile
index b6e31f79..ba9e3fa3 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,9 @@ build: external
 		-DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_FLAGS="-gdwarf-4 -g3 -DJBUF_STAT -DRE_RTP_PCAP"
 	@cmake --build build --parallel
 
+.PHONY: build_pro
+build_pro: external_pro build
+
 .PHONY: webui
 webui:
 	cd webui && npm install && npm run build-only
@@ -32,6 +35,9 @@ systemd: external
 		-DCMAKE_C_FLAGS="-g -DJBUF_STAT" -DUSE_SD_SOCK=ON -DUSE_TLS1_3_PHA=OFF
 	make build
 
+.PHONY: systemd_pro
+systemd_pro: external_pro systemd
+
 .PHONY: unix
 unix: external
 	make clean
@@ -46,7 +52,13 @@ external:
 	git clone --depth 1 -b playout_time \
 		https://github.com/baresip/baresip.git external/baresip
 	cd external/re && \
-		patch -p1 < ../../patches/re_aubuf_timestamp_order_fix.patch
+		patch -p1 < ../../patches/re_aubuf_timestamp_order_fix.patch && \
+		patch -p1 < ../../patches/re_aumix_record_only.patch
+
+.PHONY: external_pro
+external_pro: external
+	cd external/baresip && \
+		patch -p1 < ../../../mix_pro/patches/slmagic.diff
 
 ##############################################################################
 #
diff --git a/modules/amix/amix.c b/modules/amix/amix.c
index 260971ff..4a1908a3 100644
--- a/modules/amix/amix.c
+++ b/modules/amix/amix.c
@@ -42,6 +42,7 @@ struct amix {
 	struct aumix_source *aumix_src;
 	char *device;
 	uint16_t speaker_id;
+	bool magic;
 	bool muted;
 };
 
@@ -140,6 +141,13 @@ static int amix_alloc(struct amix **amixp, const char *device)
 
 	amix->muted = true;
 
+	if (strstr(device, "slmagic")) {
+		amix->magic = true;
+		aumix_source_mute(amix->aumix_src, amix->muted);
+		aumix_source_enable(amix->aumix_src, true);
+		aumix_source_record_only(amix->aumix_src, true);
+	}
+
 out:
 	if (err) {
 		mem_deref(amix);
@@ -306,7 +314,8 @@ static int play_alloc(struct auplay_st **stp, const struct auplay *ap,
 void amix_mute(const char *dev, bool mute, uint16_t id);
 void amix_mute(const char *dev, bool mute, uint16_t id)
 {
-	struct le *le;
+	struct le *le, *le_magic;
+	char dev_magic[128];
 
 	le = hash_lookup(amixl, hash_joaat_str(dev), dev_cmp_h, (void *)dev);
 	if (!le)
@@ -322,6 +331,16 @@ void amix_mute(const char *dev, bool mute, uint16_t id)
 		if (!list_contains(&speakerl, &amix->sle))
 			list_append(&speakerl, &amix->sle, amix);
 	}
+
+	re_snprintf(dev_magic, sizeof(dev_magic), "%s_slmagic", dev);
+	le_magic = hash_lookup(amixl, hash_joaat_str(dev_magic), dev_cmp_h,
+			       (void *)dev_magic);
+	if (id && le_magic) {
+		struct amix *amix_magic = le_magic->data;
+		aumix_source_mute(amix_magic->aumix_src, mute);
+		amix_magic->muted = mute;
+		amix_magic->speaker_id = 10000 + id;
+	}
 }
 
 
diff --git a/patches/re_aumix_record_only.patch b/patches/re_aumix_record_only.patch
new file mode 100644
index 00000000..330a0b33
--- /dev/null
+++ b/patches/re_aumix_record_only.patch
@@ -0,0 +1,66 @@
+diff --git a/include/rem_aumix.h b/include/rem_aumix.h
+index 4017fa2..b417fb3 100644
+--- a/include/rem_aumix.h
++++ b/include/rem_aumix.h
+@@ -29,6 +29,7 @@ int aumix_source_alloc(struct aumix_source **srcp, struct aumix *mix,
+ void aumix_source_set_id(struct aumix_source *src, uint16_t id);
+ void aumix_source_enable(struct aumix_source *src, bool enable);
+ void aumix_source_mute(struct aumix_source *src, bool mute);
++void aumix_source_record_only(struct aumix_source *src, bool enable);
+ int  aumix_source_put(struct aumix_source *src, const int16_t *sampv,
+ 		      size_t sampc);
+ void aumix_source_readh(struct aumix_source *src, aumix_read_h *readh);
+diff --git a/rem/aumix/aumix.c b/rem/aumix/aumix.c
+index 95032be..b46fbf7 100644
+--- a/rem/aumix/aumix.c
++++ b/rem/aumix/aumix.c
+@@ -47,6 +47,7 @@ struct aumix_source {
+ 	aumix_read_h *readh;
+ 	void *arg;
+ 	bool muted;
++	bool record_only;
+ };
+ 
+ 
+@@ -193,6 +194,9 @@ static int aumix_thread(void *arg)
+ 				if (csrc->muted)
+ 					continue;
+ 
++				if (csrc->record_only)
++					continue;
++
+ 				for (size_t i = 0; i < mix->frame_size; i++) {
+ 					sample = mix_frame[i] + csrc->frame[i];
+ 
+@@ -222,6 +226,9 @@ static int aumix_thread(void *arg)
+ 				if (csrc->muted)
+ 					continue;
+ 
++				if(!csrc->record_only)
++					continue;
++
+ 				for (size_t i = 0; i < mix->frame_size; i++) {
+ 					sample = mix_frame[i] + csrc->frame[i];
+ 
+@@ -493,6 +500,21 @@ void aumix_source_mute(struct aumix_source *src, bool mute)
+ }
+ 
+ 
++/**
++ * Record only aumix source
++ *
++ * @param src    Audio mixer source
++ * @param mute   True to record only, false to disable
++ */
++void aumix_source_record_only(struct aumix_source *src, bool enable)
++{
++	if (!src)
++		return;
++
++	src->record_only = enable;
++}
++
++
+ /**
+  * Enable/disable aumix source
+  *