diff --git a/tools/chatgui/CMakeLists.txt b/tools/chatgui/CMakeLists.txt
index 97f9bd52..5ff17ebd 100644
--- a/tools/chatgui/CMakeLists.txt
+++ b/tools/chatgui/CMakeLists.txt
@@ -510,6 +510,10 @@ target_link_libraries(test_stream_view PRIVATE ${QT_LIBS} ${QT_TEST_LIB} utun_vo
 if(FFMPEG_FOUND)
     target_compile_definitions(test_stream_view PRIVATE HAVE_FFMPEG)
 endif()
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    target_compile_definitions(test_stream_view PRIVATE TEST_NULL_AUDIO)
+    target_link_options(test_stream_view PRIVATE "-Wl,--wrap=ma_context_init" "-Wl,--wrap=ma_device_init")
+endif()
 add_test(NAME test_stream_view COMMAND test_stream_view)
 set_tests_properties(test_stream_view PROPERTIES TIMEOUT 30 ENVIRONMENT "QT_QPA_PLATFORM=offscreen")
 
diff --git a/tools/chatgui/tests/test_stream_view.cpp b/tools/chatgui/tests/test_stream_view.cpp
index 69bb780c..6ee621ce 100644
--- a/tools/chatgui/tests/test_stream_view.cpp
+++ b/tools/chatgui/tests/test_stream_view.cpp
@@ -1,10 +1,14 @@
 /* Настоящее ядро/actor, подписанный медиаблок и H.264 decoder: каталог до подписки, эпоха, показ и teardown. */
 #include "../src/streamplayer_window.h"
+#include "../src/sound_manager.h"
 #include "../transport/stream_bridge.h"
 #include <QtTest>
 #include <QJsonDocument>
 #include <QJsonArray>
 #include <QLabel>
+#include <QSlider>
+#include <atomic>
+#include <cmath>
 
 extern "C" {
 #include "utun_instance.h"
@@ -22,6 +26,27 @@ extern "C" {
 }
 
 static QList<QByteArray> snapshots;
+#ifdef TEST_NULL_AUDIO
+static std::atomic<ma_device_data_proc> originalAudioCallback{nullptr};
+static std::atomic<uint64_t> nonzeroSamples{0};
+extern "C" ma_result __real_ma_context_init(const ma_backend*, ma_uint32, const ma_context_config*, ma_context*);
+extern "C" ma_result __real_ma_device_init(ma_context*, const ma_device_config*, ma_device*);
+extern "C" ma_result __wrap_ma_context_init(const ma_backend*, ma_uint32, const ma_context_config*, ma_context* context) {
+    ma_backend backend = ma_backend_null; return __real_ma_context_init(&backend, 1, nullptr, context);
+}
+static void observeAudio(ma_device* device, void* out, const void* in, ma_uint32 frames) {
+    originalAudioCallback.load()(device, out, in, frames);
+    const auto* pcm = static_cast<const int16_t*>(out);
+    for (unsigned i = 0; i < frames; i++) if (pcm[i]) nonzeroSamples.fetch_add(1);
+}
+extern "C" ma_result __wrap_ma_device_init(ma_context* context, const ma_device_config* config, ma_device* device) {
+    ma_device_config copy = *config;
+    if (copy.deviceType == ma_device_type_playback && copy.playback.format == ma_format_s16 && copy.playback.channels == 1) {
+        originalAudioCallback = copy.dataCallback; copy.dataCallback = observeAudio;
+    }
+    return __real_ma_device_init(context, &copy, device);
+}
+#endif
 static void sourceEvent(UTUN_INSTANCE*, int type, const uint8_t* data, int size) {
     if (type == CHAT_EVT_STREAM_SOURCES) snapshots.push_back(QByteArray(reinterpret_cast<const char*>(data), size));
 }
@@ -130,10 +155,24 @@ private slots:
         AVPacket* packet = av_packet_alloc(); QVERIFY(packet); QCOMPARE(avcodec_receive_packet(context, packet), 0);
         QByteArray video(reinterpret_cast<const char*>(packet->data), packet->size);
         av_packet_free(&packet); av_frame_free(&frame); avcodec_free_context(&context);
+        QByteArray audio;
+#ifdef TEST_NULL_AUDIO
+        QVERIFY(SoundManager::instance()->init());
+        auto* opus = opus_codec_encoder_create(48000, 1); QVERIFY(opus);
+        int16_t pcm[960]; for (unsigned i = 0; i < 960; i++) pcm[i] = static_cast<int16_t>(6000 * std::sin(i * 0.05));
+        uint8_t encoded[1275]; int length = opus_codec_encode(opus, pcm, 960, encoded, sizeof(encoded)); QVERIFY(length > 0);
+        audio = QByteArray(reinterpret_cast<const char*>(encoded), length); opus_codec_encoder_destroy(opus);
+        nonzeroSamples = 0;
+#endif
         StreamPlayerWindow window(group, inst->node_id, epoch, "Source");
         QSignalSpy shown(&window, &StreamPlayerWindow::framePresented); window.show();
-        QTimer sender; connect(&sender, &QTimer::timeout, this, [this, video] { publish(video); }); sender.start(100);
+        QTimer sender; connect(&sender, &QTimer::timeout, this, [this, video, audio] { publish(video, audio); }); sender.start(100);
         QTRY_VERIFY_WITH_TIMEOUT(shown.count() > 0, 5000);
+#ifdef TEST_NULL_AUDIO
+        QTRY_VERIFY_WITH_TIMEOUT(nonzeroSamples.load() > 0, 5000);
+        auto* volume = window.findChild<QSlider*>(); QVERIFY(volume); volume->setValue(0);
+        QTest::qWait(50); uint64_t played = nonzeroSamples.load(); QTest::qWait(100); QCOMPARE(nonzeroSamples.load(), played);
+#endif
         sender.stop(); window.close(); QTest::qWait(20);
         stream_info info{}; QCOMPARE(stream_get_info(publisher, &info), STREAM_OK); QCOMPARE(info.owners, 1u);
 #else
@@ -166,6 +205,7 @@ private slots:
 
     void cleanupTestCase() {
         poll.stop(); gui_stream_detach(inst); stream_close(publisher); uasync_mark_stopped(ua);
+        SoundManager::instance()->shutdown();
         utun_instance_destroy(inst); uasync_destroy(ua, 0);
         QCOMPARE(u_get_allocated_count(), allocations);
     }