Solved: help me identify these songs~

who sang and what the title of these four songs?

1) http://files-upload.com/files/597312/Track%20No14.mp3
2) http://files-upload.com/files/597309/Track%20No16.mp3
3) http://files-upload.com/files/597295/Track%20No15.mp3
4) http://files-upload.com/files/597302/Track%20No12.mp3

Track 14 ~ Splender - I Think God Can Explain

There's a lot of things I understand
And there's a lot of things
I don't want to know
But you're the only face I recognize
It's so damn sweet of you
To look me in the eyes

Chrous:
It's all right, I'm O.K.
I think God can explain
I believe I'm the same
I get carried away
It's all right, I'm O.K.
I think God can explain
I'm relieved, I'm relaxed
I'll get over it yet

The scent of vaseline
In the summertime
The feel of an icecube
Melting over time
The world seems bigger than both of us
Yet it seems so small
When I begin to cry

(Chorus)
I'm so much better than you guessed
I'm so much bigger than you guessed
I'm so much brighter than you guessed

(Chorus - last line changed to
I'll get off of your back

I think God can explain
I think God can explain
I think God can explain

Track 16 ~ Wheatus - Teenage Dirtbag

Her name is Noel
I have a dream about her
She rings my bell
I got gym class in half an hour
Oh how she rocks
In Keds and tube socks
But she doesn't know who I am
And she doesn't give a damn about me

Cause I'm just a teenage dirtbag baby
Yeah I'm just a teenage dirtbag baby
Listen to Iron Maiden baby with me

Her boyfriend's a ****
And he brings a gun to school
And he'd simply kick
My *** if he knew the truth
He lives on my block
And he drives an Iroc
But he doesn't know who I am
And he doesn't give a damn about me

Track 15
my only joy (? sounds familiar but ... huh?!)

Track 12
no idea

Track15 is:
LiveonRelease - I'm Afraid Of Britney Spears
youtube video: http://www.youtube.com/watch?v=X1NUHrYLsws


About track no 12: do you have just this one snippet of this song? Or is it instrumental?