Okay...ordered an Athearn Genesis GP9 and ordered a Tsunami Soundtraxx decoder. The decoder said "plug and play format" in the description. Well to my surprise when I pulled it out of the package...it contains NO speaker and no wires to "plug and play. I thought this was a simple "plug and play" decoder needing nothing. Needless to say I'm none too happy. Is the industry standard of "plug and play" mean you have to solder the thing in and install your own speaker? Is there a decoder that is truly plug and play?