Is "ile" what makes the definition "that road" as opposed to "the road?"
Yes. Ile is N class "that" (or, where applicable, Mi class "those").
ile - that ( far away from speaker ) basic is : - le. Prefix you agree with the noun class.
Suggest, slow the speakers down. They talk way to fast to pick out sounds sometimes. It makes it a lot easier if we can hear each syllable.