The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Giuseppe Cigala:
Ringphone HD is an application that allow you to easily create ringtones for your iPhone.- select your track from the music library, tapping on the "List" button; - set the start/end points of the ringtone moving the vertical bars and scrolling the waveform view (remember that the length cannot exceed 30 seconds); - when you have finished, choose a ringtone name and tap on the "Save" button; - open iTunes, select your device, press the "App" button and look in the "File sharing" section; - select the "Ringphone XP" icon and you will see the file of your new ringtone; - playing the file, the ringtone will be automatically inserted in the "Ringtones" section of you iTunes library; - finally, sync your device with iTunes and the ringtone will be ready for use.