we have audio rendering working! :D

src/ui/widgets/timeline.py

@@ -1,6 +1,9 @@
-from textual.containers import VerticalScroll, Horizontal
+from textual.containers import Vertical,  VerticalScroll, Horizontal, VerticalGroup
+from textual.widgets import Sparkline
 from textual.app import ComposeResult
 
+from ui.widgets.chunk_types.audio import AudioChunk
+
 
 class TimelineRow(Horizontal):
     DEFAULT_CSS = """
@@ -10,9 +13,6 @@ class TimelineRow(Horizontal):
         margin-bottom: 1;
     }
     """
-    
-    def compose(self) -> ComposeResult:
-        yield from ()
 
 class Timeline(VerticalScroll):
     DEFAULT_CSS = """
@@ -23,5 +23,7 @@ class Timeline(VerticalScroll):
     """
     
     def compose(self) -> ComposeResult:
-        yield TimelineRow()
-        yield TimelineRow()
+        with TimelineRow():
+            yield AudioChunk("cool sample.mp3")
+        with TimelineRow():
+            yield AudioChunk("cool sample 2.mp3")