diff --git a/src/transcode/worker.py b/src/transcode/worker.py
index d1f4447..6e7b0a9 100644
--- a/src/transcode/worker.py
+++ b/src/transcode/worker.py
@@ -27,29 +27,37 @@ class Worker:
             shutil.copy(file.path, output_path)
             log.info("ART", f"Successfully copied {output_path}")
         except FileExistsError:
-            pass
+            log.warning("ART", f"File exists: {output_path}")
         except Exception:
             log.error("ART", f"{file.path} failed to copy")
 
     def transcode_audio(self, track, encoder, log):
-        enc_filename = encoder.parts[-1]
         track_output = track.output_file(self.output_root, self.extension)
         if track_output.exists():
             log.info("AUD", f"Skipped {track_output}")
             return
         self.create_directories(track)
-        if enc_filename == "opusenc.exe":
-            additional_args = ('--bitrate', '128', '--music')
-            subprocess_args = (str(encoder),) + additional_args + (str(track.path), str(track_output))
-        elif enc_filename == "qaac64.exe":
-            additional_args = (str(track), '-o', str(track_output), '--threading')
-            subprocess_args = (str(encoder),) + additional_args
+        encoder_args = self.encoder_args(encoder, track, log)
         try:
-            subprocess.run(subprocess_args, capture_output=True, text=True, check=True)
+            subprocess.run(encoder_args, capture_output=True, text=True, check=True)
             log.info("AUD", f"Transcoded '{track}' successfully.")
         except Exception:
             log.error("AUD", f"ERROR: Transcoding of '{track}' failed.")
 
+    def encoder_args(self, encoder, track, log):
+        track_output = track.output_file(self.output_root, self.extension)
+        enc_filename = encoder.parts[-1]
+        encoder_args = ""
+        if enc_filename == "opusenc.exe":
+            additional_args = ('--bitrate', '128', '--music')
+            encoder_args = (str(encoder),) + additional_args + (str(track.path), str(track_output))
+        elif enc_filename == "qaac64.exe":
+            additional_args = (str(track), '-o', str(track_output), '--threading')
+            encoder_args = (str(encoder),) + additional_args
+        else:
+            log.error("AUD", f"Encoder {encoder} not recognised.")
+        return encoder_args
+
     def create_directories(self, track: File):
         if not track.artist_out(self.output_root).exists():
             try: