Fixed a bug in the Listening exam

src/exams/Listening.tsx

@@ -108,6 +108,7 @@ export default function Listening({exam, showSolutions = false, onFinish}: Props
 			</div>
 			<div className="rounded-xl flex flex-col gap-4 items-center w-full h-fit">
 				<AudioPlayer
+					key={partIndex}
 					src={exam.parts[partIndex].audio.source}
 					color="listening"
 					onEnd={() => setTimesListened((prev) => prev + 1)}