In the oldest traditions of roleplaying, from the earliest days of Dungeons & Dragons, there was the concept of a caller, who was one player designated to be the mouthpiece of the PCs, and to relay information from all the other players to the DM/GM. This concept died fairly early, as it gave way to the more streamlined and simple option of players just announcing their own actions.

Also make sure that one player doesn't assume the role of a caller and speak for everybody when discussing metagame issues as well.

Transcript

GM: I can skip the monologues... if they're upsetting people?
[SFX]: whooom!
Han: What? No, I'm not upset. Just Han is.
GM: Oh! Well in that case:
Boba Fett: Kenobi? Kenobi, you are dead, my old friend?
Boba Fett: I wake each morn with your face burning in my mind. And my sleep is seared by dreams of revenge.
Boba Fett: You took away everything that mattered in my life, and now you've taken away yourself too!!
Jabba: Such delicious opera! Can this day get any better?
Boba Fett: And years ago?? I could have moved on with my life.
C-3PO: Found another obsession?