I still audition a lot - it depends on the medium. For film, I audition just like everyone else, because it's a different set of casting directors. For television and theatre - well, for theater, there's some auditioning that has to happen, just for them to know that you can sing it, and how you'd take on the part. But for TV, things are getting a little better with, "Would you like to be a part of this?" But that's really for one - night things. It sounds like a pompous answer, if I say people are calling me to ask me to do things.
I don't know, on a sitcom, and in theatre especially, you have to really be listening to an audience. And if you're losing them, you can hear the sniffs, and the playbills shuffling and whatnot.
