diff --git a/cantrip_apps.mk b/cantrip_apps.mk
index 7acb193..8715d1c 100644
--- a/cantrip_apps.mk
+++ b/cantrip_apps.mk
@@ -126,6 +126,11 @@
 ## Build the playback Rust application in release mode.
 playback_release: $(CANTRIP_OUT_RUST_APP_RELEASE)/playback/playback.app
 
+## Build the sound Rust application in debug mode.
+sound_debug: $(CANTRIP_OUT_RUST_APP_DEBUG)/sound/sound.app
+## Build the sound Rust application in release mode.
+sound_release: $(CANTRIP_OUT_RUST_APP_RELEASE)/sound/sound.app
+
 ## Build the suicide C application in debug mode.
 suicide_debug: $(CANTRIP_OUT_C_APP_DEBUG)/suicide/suicide.app
 ## Build the suicide C application in release mode.
@@ -143,5 +148,6 @@
 .PHONY:: mltest_debug mltest_release
 .PHONY:: panic_debug panic_release
 .PHONY:: playback_debug playback_release
+.PHONY:: sound_debug sound_release
 .PHONY:: suicide_debug suicide_release
 .PHONY:: timer_debug timer_release
diff --git a/platforms/nexus/cantrip_builtins.mk b/platforms/nexus/cantrip_builtins.mk
index da2bc99..c8d5c33 100644
--- a/platforms/nexus/cantrip_builtins.mk
+++ b/platforms/nexus/cantrip_builtins.mk
@@ -19,10 +19,17 @@
                          $(CANTRIP_OUT_RUST_APP_RELEASE)/mltest/mltest.app \
                          $(CANTRIP_OUT_RUST_APP_RELEASE)/panic/panic.app \
                          $(CANTRIP_OUT_RUST_APP_RELEASE)/playback/playback.app \
+                         $(CANTRIP_OUT_RUST_APP_RELEASE)/sound/sound.app \
                          $(CANTRIP_OUT_C_APP_RELEASE)/suicide/suicide.app \
                          $(CANTRIP_OUT_RUST_APP_RELEASE)/timer/timer.app
-# Temporarily have only 5M for builtins; not enough for an IREE model
-CANTRIP_MODEL_RELEASE := $(OUT)//kelvin/sw/bazel_out/hello_world.kelvin
+# Builtins are loaded from SPI flash which is 16M by default
+CANTRIP_MODEL_RELEASE := $(OUT)/kelvin/sw/bazel_out/hello_world.kelvin \
+                         $(OUT)/kelvin_iree/sparrow_iree/samples/microbenchmarks/conv1x1_test_emitc_static.kelvin
+ifneq ("$(wildcard $(ROOTDIR)/ml/ml-models)", "")
+CANTRIP_MODEL_RELEASE  += $(OUT)/kelvin/sw/bazel_out/soundstream_encoder_non_streaming.kelvin
+else
+# TODO(sleffler): fallback to IREE version
+endif
 
 CANTRIP_APPS_DEBUG    := $(CANTRIP_OUT_C_APP_DEBUG)/hello/hello.app \
                          $(CANTRIP_OUT_RUST_APP_DEBUG)/fibonacci/fibonacci.app \
@@ -31,12 +38,13 @@
                          $(CANTRIP_OUT_RUST_APP_DEBUG)/mltest/mltest.app \
                          $(CANTRIP_OUT_RUST_APP_DEBUG)/panic/panic.app \
                          $(CANTRIP_OUT_RUST_APP_DEBUG)/playback/playback.app \
+                         $(CANTRIP_OUT_RUST_APP_DEBUG)/sound/sound.app \
                          $(CANTRIP_OUT_C_APP_DEBUG)/suicide/suicide.app \
                          $(CANTRIP_OUT_RUST_APP_DEBUG)/timer/timer.app
 # NB: debug builds only run on Renode where we have 16M for builtins
-CANTRIP_MODEL_DEBUG   := $(OUT)/kelvin_iree/sparrow_iree/samples/microbenchmarks/conv1x1_test_emitc_static
+CANTRIP_MODEL_DEBUG   := $(OUT)/kelvin_iree/sparrow_iree/samples/microbenchmarks/conv1x1_test_emitc_static.kelvin
 
 CANTRIP_SCRIPTS       := $(ROOTDIR)/build/platforms/$(PLATFORM)/builtins.repl
 
-$(patsubst %.kelvin,%.elf,$(CANTRIP_MODEL_RELEASE)): kelvin_hello_world
+$(patsubst %.kelvin,%.elf,$(CANTRIP_MODEL_RELEASE)): kelvin_hello_world kelvin_soundstream
 $(CANTRIP_MODEL_DEBUG): iree_model_builtins
diff --git a/platforms/nexus/kelvin.mk b/platforms/nexus/kelvin.mk
index 94ac8f8..7c38932 100644
--- a/platforms/nexus/kelvin.mk
+++ b/platforms/nexus/kelvin.mk
@@ -13,6 +13,7 @@
 KELVIN_SIM_SRC_DIR := $(ROOTDIR)/sim/kelvin
 KELVIN_SIM_OUT_DIR := $(OUT)/kelvin/sim
 
+MODEL_INTERNAL_SRC_DIR:=$(ROOTDIR)/ml/ml-models
 
 $(KELVIN_SW_BAZEL_OUT_DIR):
 	mkdir -p "$(KELVIN_SW_BAZEL_OUT_DIR)"
@@ -43,6 +44,13 @@
 			-wholename "*ST-*/*.bin" \) \
 			-exec cp -f {} "$(KELVIN_SW_BAZEL_OUT_DIR)/" \;
 
+## Build Kelvin soundstream artifacts
+kelvin_soundstream: | $(KELVIN_SW_BAZEL_OUT_DIR)
+	cd "$(MODEL_INTERNAL_SRC_DIR)" && \
+		bazel build //quant_models/tflm/soundstream:soundstream_encoder_non_streaming && \
+		cd bazel-out ; find . -type f -wholename "*ST-*/*.elf" \
+			-exec cp -f {} "$(KELVIN_SW_BAZEL_OUT_DIR)/" \;
+
 
 ## Test Kelvin SW artifacts
 #
@@ -115,5 +123,7 @@
 	rm -rf $(KELVIN_SIM_OUT_DIR)
 
 PHONY:: kelvin_hw_clean kelvin_hw_sim kelvin_hw_test kelvin_hw_verilog
-PHONY:: kelvin_sw kelvin_sw_clean kelvin_sw_test kelvin_hello_world
+PHONY:: kelvin_sw kelvin_sw_clean kelvin_sw_test
+PHONY:: kelvin_hello_world
+PHONY:: kelvin_soundstream
 PHONY:: kelvin_sim kelvin_sim_clean