[@Eyen]
Where are ads you said? About changing background music, locate music icon and remove it by clicking and deleting the button. If you want to clean the music file you don’t need, click the delete button below each track in the playlist. About multimedia related information, you can read this article https://www.amolink.com/greeting-cards/hello-multimedia-greeting-cards.html. Send your work link to me support@amolink if you want, we will check it out about your question on music. Thank you for your using.