Help with Copy and Paste sound from Flash Websites (Safari)

Hello all,

At work we use a Flash/Flex application as our backend Customer Management system. I normally access it from a Windows machine however at home I use my iMac. However whenever I try to copy and paste from this system I get a short sharp sound as though there is an error but it does copy and paste successfully. If I copy and paste using TextEdit for example there are no sounds made, just when I seem to use Flash websites.
To test this theory that it wasn't just the system we use at work I tried to copy and paste into a flash social game I know of and it too does the same noise.

Although the copy and paste works it bugs the hell out of me the noise it makes and I can't seem to find a way of stopping it. I've tried searching different terms in google but no luck finding the answer.

I'm wondering if anyone here can help me? I'm using OSX 10.9.1.

**UPDATE**: Just installed and tried this in Chrome. It doesn't do this in Chrome, but it does in Safari.

Thanks

 

If it helps, I've checked sound properties and its making the "funk" sound when copy and pasting.