The British Library's race to save old audio recordings

The British Library is in the process of digitising its 6.5 million sound recordings.

The audio is in more than 40 different formats from wax cylinders to MiniDiscs so staff are having to hunt down old machines to play back the audio.

Some recordings are also degrading and could be lost within 15 years unless they are digitised.

BBC Click finds out more.

See more at Click's website and @BBCClick.