To save audios to a mobile device all you have to do is click on the "Save file" button on the screen of the audio you want to download.
You will be asked if you want to save the app to your device.
You must click yes to download the file, depending on the size of the file the audio should download within a couple of minutes.
Once you have the audio downloaded you will see the app change to "File Saved, now it is on your device"
If you now click on the "My Dare" icon you will be able to access all the audios that you have downloaded.