Another reason you go through the steps that are outlined to you, so you can learn as well what's going on, and what's what, and so can others from your resolution.
As it is, we have no cause here, we have no effect, we have no resolution because you didn't state specifically what you did when. Took you this long to say what you just did. All we have, is pretty much you all of a sudden went into Kaffeine, and "voila it's working", whereas it wasn't before, just out of the clear blue sky. If you don't know what components are what, then ask. rolf even suggested that you could try running pavucontrol from command line - you could've posted the output from that, and we could've directed you from there. Or, for that matter, post a screenshot! Ask, what the heck is this!
If you don't know what something is, then ask, so we can see what's going on, others can who have the same issue, and so can you. This is how we learn about Linux.
I can not stress this enough!
I'd rather be a free person who fears terrorists, than be a "safe" person who fears the government.
No gods, no masters.
"A druid is by nature anarchistic, that is, submits to no one."