As the iPad does not support Flash content, the audio player does not work. But you can click on download button (the green one), the audio will then played in a special quicktime browser window on the iPad. Downloads are also not possible. You must download audios on your normal computer and synchronize the audio files via iTunes with your iPad. Then you can listen to them on the iPad within the iPad audio player. Another option is of course the iLingQ app, but you must be a paying LingQ subscriber to use this app.