The only safe, quick(er) method I know of is to place them in a zipper bag in a sink full of cold water. If they're frozen in a styrofoam tray, remove the tray to speed thawing. As they begin to thaw, separate the pieces to accelerate the process. You're supposed to change out the water every so often, but I often skip that...I just make sure there's a lot of cold water in the sink.
Regards,
Chris