The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From ASUSTeK Computer:
Can you imagine that sitting in the living room, using your iPhone to remotely control your PC located in the bedroom?With the installation of BT Turbo Remote, your iPhone will be transformed into a remote controller for selected ASUS motherboards. Besides, the user-friendly utility provides never-experienced Bluetooth enjoyments presented as:*BT Turbo Key: allows you to use your iPhone to remotely overclock or monitor your computer.*Pocket Media: allows you to use your iPhone to remotely control the playback of the audio files in your computer via the Windows Media Player.*Reset/Off: allows you to use your iPhone to remotely shut down or restart your system.