In BBC iPlayer, sideloading is the term used when you transfer a programme to your portable media device.
You may have come across sideloading before if you've transferred pictures from your digital camera to your computer, or music from your computer to your portable media player.
Further information on mobile devices can be found at the Where to get BBC iPlayer page.
For further help you can Contact Us, or you can discuss this issue at the BBC iPlayer messageboard.