Question how to keep StreamTransport capture audio off the speakers

[jimdagys]

I am using StreamTransport (v1.0.2.2171) to capture a NPR (National Public Radio) on demand streaming Celtic program.
Website:
http://www.thistleradio.com/index.php?option=com_content&view=article&id=572&Itemid=109
In this case, url for particular show is:
http://www.npr.org/player/v2/mediaPlayer.html?action=1&t=1&islist=false&id=286252386&m=286262843
During capture, the stream audio comes out of the speakers.
My question: Is there a way to continue the capture without the audio coming out the speakers? I want to listen to the BBC while capturing the Celtic program in the background.

[jagabo]

Turn down the player's volume control?

[jimdagys]

Thank you. That works.