A Strange Audio Problem on Windows 7

When using the Chrome browser I've found that some sound clips from the Xeno-canto website of bird songs won't play. Or rather they will play but I can't hear the sound. So for example this one appears to play but for me no sound is produced.

However, this one not only plays but I can hear the sound as well

They are both mp3 files and it's only in Chrome that this occurs. It's the same if I play them directly on the Xeno-canto website.They both work perfectly well in Firefox. Anyone else encountered this problem?

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Tony

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