Can anyone recommend a gadget to switch optical sources?

[Ammonite Audio]

My amplifier has many coaxial digital inputs, but only one optical input. I have two sources that are optical only, so I need a simple, cheapish, discreet and unobtrusive switching box to combine these optical sources. Sound quality is not the ultimate factor, as these sources are the Airport Express and a Humax Freesat HD recorder.

Can anyone help?

Many thanks.

[Themis]

Is it that you're looking for ?

http://www.comparestoreprices.co.uk/audio-&-video-cables/prosignal-toslink-switch-digital-audio-optical-switch.asp