feat: partial background audio implementation

#11 currently doesn't fully work
(note: not my finest work, I wrote this sleep-deprived)

I need to push for other changes

video_creation/final_video.py

@@ -130,9 +130,10 @@ def make_final_video(
         verbose=False,
         threads=multiprocessing.cpu_count(),
     )
-    if settings.config["settings"]["background_audio"]: # background.mp3
-        if not exists(f"assets/mp3/background.mp3"):
-            print_substep("optional background audio file didn't so skipping.")
+    if settings.config["settings"]["background_audio"]:
+        print('[bold green] Merging background audio with video')
+        if not exists(f"assets/backgrounds/background.mp3"):
+            print_substep("Cannot find assets/backgrounds/background.mp3 audio file didn't so skipping.")
             ffmpeg_extract_subclip(
                 "assets/temp/temp.mp4",
                 0,
@@ -141,13 +142,14 @@ def make_final_video(
             )
         else:
             ffmpeg_merge_video_audio("assets/temp/temp.mp4", "assets/backgrounds/background.mp3", "assets/temp/temp_audio.mp4")
-            ffmpeg_extract_subclip(
+            ffmpeg_extract_subclip( # check if this gets run
                 "assets/temp/temp_audio.mp4",
                 0,
                 final.duration,
                 targetname=f"results/{subreddit}/{filename}",
             )
     else:
+        print('debug duck')
         ffmpeg_extract_subclip(
             "assets/temp/temp.mp4",
             0,