Good morning and thank you for posting on the Final Fantasy XIV Technical Support Forums.

Is the missing audio on the launcher the only place you find this? Are you missing audio when you get into the game itself?

As for the storage size, the total file size should reduce when you log in for the first time. Initially, it should add the new data on top of the old before deleting the old data upon log in.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!