Possible Clues:

• Train in Chattanooga, producing rhymes for children
• On-line toy firm keeping bootleg stuff on disk
• Train to eat doubly loudly?
• Track runner, to a tot
• Loco partner of Bill smuggles in illicit whisky
• Cartoon train's sound
• How surprising to find whisky, say, in baby carriages?
• Half opting twice for train
• Train sound (2 words)
• Old train to a child