I read in an earlier thread about some one using a MRC sound decoder. I read a review of one of these that was less than favorable. I want to install a soundtrax decoder in a loco and maybe install a MRC sound decoder in a unit that will be MU'ed to the soundtrax locomotive. Has anyone tried this? All the MRC decoder would have to do is enhance the soundtrax sound by adding additional prime mover noises. I also have a BLI loco on order since 9/18/04, but it is steam.