OnTheAir Studio is a simple audio jingles playback application. It uses both QuickTime and CoreAudio in order to address any external or built-in audio devices. It supports any audio file formats that QuickTime supports, including protected AAC files from the iTunes Music Store.
Presets documents can contain up to 24 buttons which are assigned to sound files. Some features like in/out points, loop, output labels etc... can be found only in the Pro version.