I did it for Part 5 so I'll try again here.
Song #1 - Somewhere in Banjo Kazooie.
Song #2 - I know this, but can't place it. >_<
Song #3 - No idea at all.
Song #4 - No idea at all.
Song #5 - Bomberman.
Song #6 - Same as Song#2.
Song #7 - I think this was from a Kirby game.
Song #8 - The Legend of Zelda. One of the handheld ones.
Song #9 - One of the Routes, probably Route #1. Pokémon Red/Blue.
Song #10 - Armoured Armadillo's level, Megaman X.
Song #11 - Same as Song#2.
Song #12 - Celadon City, Pokémon Red/Blue. Might be Cerulean City instead.
Song #13 - Saria's Song/Lost Woods, Ocarina of Time.
Song #14 - Dire Dire Docks, Super Mario 64.
Song #15 - Prelude of Light, Ocarina of Time.
This is really good, just like the other ones. Nice job!
How'd I do?