[CentOS] Testing out USB mic

Tue Feb 10 19:57:12 UTC 2009
Robert Moskowitz <rgm at htt-consult.com>

I have a Plantronics DSP-400 headset on a Centos 5.2 system that I am 
using for testing with SIP Communicator.

How can I test the microphone on the headset to see if it is working in 
the system?