"Chugga, Chugga, Choo Choo!" is a lost kids song by an unknown artist. The song can be heard here.
It was released in 2007, or before then. It is likely by Parents Magazine since "Parents" is the contributing artist.
Lyrics

Audio File Data
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Time to hop the freight train, it's time to take a ride
And you can be the engineer
Yep, you can be the guide
So climb aboard the engine, and don't forget your hat
Just aim us down the line, you'll learn in nothin' flat
We'll run the train to Jersey, and head her down the track
From there we'll head to Philly, we'll take her there and back
We'll rest up in the roundhouse, then onward we will go
Rollin' through Virginia before the rooster crows
But first, let's check the weather
Yep, the sky is clear
Check behind, we must be sure that no one's standing near
Now check your watch exactly, be sure to leave on time
This mighty locomotive never ever runs behind
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Now give a hefty holler
All aboard, we're headin' out
And pull the cord above your head, the whistle gives a shout
Now push the lever forward and the wheels begin to roll
We're chuggin' through the mountain tunnel, shovelin' in the coal
Grain hoppers filled with wheat and corn
Tank cars with gasoline
Boxcars with all kinds of stuff
And flatbeds with machines
Cars with timber, coal, and rope, new shoes, and laundry soap
And cattle cars with cows and sheep, horses, pigs, and goats
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
We're rollin' through the forests, past the cities and small towns
Alongside the river valleys
Hey, this engine's windin' down
We're runnin' out of steam, we're runnin' out of juice
Everybody's out of breath from engine to caboose
We gotta keep on movin', but this engine's soundin' sick
We need to feed the fire with more coal and make it quick
Spoken:
C'mon everybody, grab a shovel!
Okay, let's count as we shovel: one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve!
Great job! I think we're back on track!
Sung:
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine
Chugga chugga, chugga chugga, choo choo
Rollin' down the line
I'm the train conductor and this ol' train is mine