Win 2.91 / Shoutcast - they can hear the music, but not my voice

[Aymelek]

Any suggestions?

Using Winamp 2.91 and Shoutcast. Connect, no problem. They can hear my music... but they can't hear me talk.

We know it's not the mic or the mic connnection - we chat live via yahoo chat, etc... and all is well.

Something inhibits them from hearing me on shoutcast. We've checked every volume control known and nothing is muted.. gah.. help!