diff --git a/pyproject.toml b/pyproject.toml
index 6147e5d..2574555 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "tiddl"
-version = "3.4.0a4"
+version = "3.4.0a5"
 description = "Download Tidal tracks with CLI downloader."
 readme = "README.md"
 requires-python = ">=3.13"
diff --git a/tiddl/cli/commands/download/downloader.py b/tiddl/cli/commands/download/downloader.py
index 60dbc51..1357ce8 100644
--- a/tiddl/cli/commands/download/downloader.py
+++ b/tiddl/cli/commands/download/downloader.py
@@ -159,6 +159,8 @@ class Downloader:
                 if stream.audioQuality in ["HI_RES_LOSSLESS", "LOSSLESS"]:
                     quality = f"{quality} {stream.bitDepth}-bit, {(stream.sampleRate or 0) / 1000:.1f} kHz"
                     should_extract_flac = True
+                else:
+                    download_path = download_path.with_suffix(".m4a")
 
             elif isinstance(item, Video):
                 stream = self.api.get_video_stream(
diff --git a/tiddl/core/api/models/base.py b/tiddl/core/api/models/base.py
index d2c93e1..e03e96e 100644
--- a/tiddl/core/api/models/base.py
+++ b/tiddl/core/api/models/base.py
@@ -124,7 +124,7 @@ class Favorites(BaseModel):
 class TrackStream(BaseModel):
     trackId: int
     assetPresentation: Literal["FULL"]
-    audioMode: Literal["STEREO"]
+    audioMode: Literal["STEREO", "DOLBY_ATMOS"]
     audioQuality: TrackQuality
     manifestMimeType: Literal["application/dash+xml", "application/vnd.tidal.bts"]
     manifestHash: str
diff --git a/tiddl/core/utils/parse.py b/tiddl/core/utils/parse.py
index 78c72d8..5575b9a 100644
--- a/tiddl/core/utils/parse.py
+++ b/tiddl/core/utils/parse.py
@@ -80,7 +80,7 @@ def parse_track_stream(track_stream: TrackStream) -> tuple[list[str], str]:
         file_extension = ".flac"
         if track_stream.audioQuality == "HI_RES_LOSSLESS":
             file_extension = ".m4a"
-    elif codecs.startswith("mp4"):
+    elif codecs.startswith("mp4") or codecs == "eac3":
         file_extension = ".m4a"
     else:
         raise ValueError(f"Unknown codecs `{codecs}` (trackId {track_stream.trackId}")