None to be heard in this sentence. The oral sign for you to understand that it is plural is article "les" (pronounced differently from "le") : http://translate.google.fr/?hl=fr&tab=wT#fr/en/le%2C%20les
awesome- du is always in front of a masculine noun : du vin, du pain, du chocolat. De for something made of or made for : robe de velours / velvet dress. souliers de travail / shoes for work. C'est l'auto du patron / It's the boss'car. la poupée de ma fille / my daughter's doll.
Yes, they are pronounced the same.
Have a look at the whole conjugation in present:
- je mange, tu manges, il/elle/on mange, nous mangeons, vous mangez, ils/elles mangent.
So, the subject or other words in the sentence will help you to determine which form of the verb it is.