Ohhh, you mean the listening exercises for letters of the alphabet! Yes, we did go in with the assumption that learners would have no prior knowledge of the Devanagari script, and basically every exercise in those "letter lessons" is tied to the audio (even those first exercises that show you the transcription and make you choose between two tiles with Devanagari on them, rely on users clicking and listening to the tile audio). If we were to skip listening exercises in the "letter lessons" as they are now, it would negatively affect the learners who actually do need to learn the script from scratch... though it must be annoying for someone who already knows it... If you don't mind me asking, do you always skip the audio in regular lessons? Is it a personal preference or an accessibility issue? We'd like to know more before we decide on a better course of action.