diff --git a/main.py b/main.py
index 301097b..a2b1964 100755
--- a/main.py
+++ b/main.py
@@ -19,6 +19,7 @@ from PyQt6.QtWidgets import (
     QComboBox, QCheckBox, QSpinBox, QDoubleSpinBox,
     QMessageBox, QInputDialog, QDialog, QDialogButtonBox, QFormLayout,
     QTableWidget, QTableWidgetItem, QTabWidget, QTabBar, QHeaderView,
+    QToolBox, QGroupBox,
     QGridLayout,
 )
 from PyQt6.QtCore import Qt, QObject, QThread, QTimer, QRect, QSize, pyqtSignal, QSettings
@@ -4480,7 +4481,7 @@ class MainWindow(QMainWindow):
 
         # Row 2/3 — annotation, output path, crop and scan controls all live in
         # the control deck's tabs now (_build_export_tab / _build_crop_tab /
-        # _build_scan_tab); path_row and settings_row are no longer mounted.
+        # _build_audio_tab); path_row and settings_row are no longer mounted.
 
         right = QWidget()
         right_layout = QVBoxLayout(right)
@@ -4495,7 +4496,7 @@ class MainWindow(QMainWindow):
         right_layout.addWidget(self._build_control_deck())
         self._build_export_tab()
         self._build_crop_tab()
-        self._build_scan_tab()
+        self._build_audio_tab()
 
         # Left: queue header + playlist
         self._btn_open = QPushButton("+ Open Files")
@@ -4665,7 +4666,7 @@ class MainWindow(QMainWindow):
         deck.setTabBar(_DeckTabBar())
         self._tab_export = QWidget(); self._tab_export.setObjectName("export_tab")
         self._tab_crop = QWidget();   self._tab_crop.setObjectName("crop_tab")
-        self._tab_scan = QWidget();   self._tab_scan.setObjectName("scan_tab")
+        self._tab_audio = QWidget();  self._tab_audio.setObjectName("audio_tab")
         # Panel identity for the side-by-side view (mirrors PlaylistWidget).
         # _label drives the tab text and split-column header; _deck_key is a
         # stable persistence key; _pinned tracks side-by-side membership.
@@ -4675,14 +4676,14 @@ class MainWindow(QMainWindow):
         self._tab_crop._pinned = False
         self._tab_crop._label = "Crop && Track"
         self._tab_crop._deck_key = "crop"
-        self._tab_scan._pinned = False
-        self._tab_scan._label = "Scan"
-        self._tab_scan._deck_key = "scan"
+        self._tab_audio._pinned = False
+        self._tab_audio._label = "Audio"
+        self._tab_audio._deck_key = "audio"
         # Ordered list for deterministic column / tab order.
-        self._deck_panels = [self._tab_export, self._tab_crop, self._tab_scan]
+        self._deck_panels = [self._tab_export, self._tab_crop, self._tab_audio]
         deck.addTab(self._tab_export, self._tab_export._label)
         deck.addTab(self._tab_crop, self._tab_crop._label)
-        deck.addTab(self._tab_scan, self._tab_scan._label)
+        deck.addTab(self._tab_audio, self._tab_audio._label)
         self._control_deck = deck
         deck.tabBar().pin_toggle_requested.connect(self._on_deck_pin_toggle)
 
@@ -4742,8 +4743,8 @@ class MainWindow(QMainWindow):
         g.addWidget(self._chk_track,         3, 0, 1, 2)
         g.setRowStretch(4, 1); g.setColumnStretch(2, 1)
 
-    def _build_scan_tab(self) -> None:
-        g = QGridLayout(self._tab_scan)
+    def _build_audio_tab(self) -> None:
+        g = QGridLayout(self._tab_audio)
         g.setContentsMargins(8, 6, 8, 6); g.setHorizontalSpacing(8); g.setVerticalSpacing(6)
         model_row = QHBoxLayout()
         model_row.addWidget(self._cmb_scan_model, 1); model_row.addWidget(self._btn_model_history)
diff --git a/tests/test_ui_structure.py b/tests/test_ui_structure.py
index f3c1721..7a52eff 100644
--- a/tests/test_ui_structure.py
+++ b/tests/test_ui_structure.py
@@ -55,7 +55,7 @@ def test_workers_spinbox_in_export_tab(win):
 
 def test_scan_button_in_scan_tab(win):
     from PyQt6.QtWidgets import QPushButton
-    assert win._btn_scan in win._tab_scan.findChildren(QPushButton)
+    assert win._btn_scan in win._tab_audio.findChildren(QPushButton)
 
 
 def test_portrait_combo_in_crop_tab(win):
@@ -106,7 +106,7 @@ def test_side_by_side_menu_pins_third_panel(win):
     # (there's no tab bar to right-click). Suppress the QSettings save via the
     # _deck_loading guard so this doesn't leak into other windows.
     win._tab_export._pinned = True
-    win._tab_scan._pinned = True
+    win._tab_audio._pinned = True
     win._refresh_deck_layout()
     assert len(_split_columns(win)) == 2
     act = next(a for a, p in win._deck_pin_actions if p is win._tab_crop)
@@ -271,3 +271,14 @@ def test_audio_region_tracks_cursor_and_length(win):
     win._file_path = ""
     win._update_audio_region()
     assert win._timeline._audio_region is None
+
+
+def test_audio_deck_tab_exists(win):
+    # The old "Scan" deck tab is now "Audio".
+    assert hasattr(win, "_tab_audio")
+    assert win._tab_audio._deck_key == "audio"
+    assert win._tab_audio in win._deck_panels
+    assert not hasattr(win, "_tab_scan")
+    labels = [win._control_deck.tabText(i)
+              for i in range(win._control_deck.count())]
+    assert "Audio" in labels and "Scan" not in labels