refactor audio to use custom listener stores

src/lib/utility/use-state.ts

@@ -2,11 +2,11 @@ import { podcast_preferences } from '$lib/preferences';
 import { podcast_progress } from '$lib/progress';
 
 export function save_podcast_state() {
-	podcast_progress.save_all();
+	podcast_progress.save();
 	podcast_preferences.save();
 }
 
 export function load_podcast_state() {
-	podcast_progress.load_all();
+	podcast_progress.load();
 	podcast_preferences.load();
 }