>But I'm curious what options are out there now in terms
>of building it myself.  I can use a PIC and a few different
>methods.  There are sound chips available elsewhere.  What
>have you all been doing lately to generate sound?

Wonder where he got the idea of a car that goes 'choo-choo' ...

Maybe a model of a Stanley Steamer is in order ...

As to generating the sound, I would look at Olins HAL Halloween project, 
which does sound generation using PWM. He also has the PC software to get a 
.WAV file into suitable form for downloading into the chip. 

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