An MP3 is static. It takes up 3.5 MB of storage. It doesn't care if you listen to it once or a thousand times. But Sayyidul Istighfar is alive. It is a contract between you and the Creator. You can't just save it to a folder named "Deen" and expect your heart to change.

Did you feel that? That tremor in your chest? That is what you were actually looking for. The MP3 is just a mirror. The voice inside you is the real reciter.

Say it once. With your own voice. Even if it cracks. Even if your pronunciation is bad.