When i do an Audio Conversation with a friend on windows live messenger, she can hear my audio output. In other words, she can hear every sound that would normally come out of my speakers, as if it comes from my microphone (including herself). in addition to that she can also hear my voice.
It's not an echo though, because even when all my speakers and headset earphones are unplugged, she can still hear my pc's audio output.
She hears my voice clearly and my pc's audio output a bit distorted, not sure if that's helpful information. I hope someone will be able to help me with this because i'm all out of ideas.