Problems with Ventrilo

Hi,

I have a little problem with my ventrilo, because I cant hear people. I can only talk, but I cant hear others speak. I checked my settings in Ventrilo and it looks like they are fine, so it should be somewhere else. First it was working, but now I didnt used it for a while and its not working anymore. Can someone help me with this?

Btw. For the funny people: Yes , I got my sound on!