You know, I don't think the song is posted here, or at least there isn't a thread title indicating it when I do a Supersearch. Here's what I found-- including verses! Maybe someone can extract the MIDI and post the tune. I dunno how the verses go...

Source: http://www.niehs.nih.gov/kids/lyrics/ballgame.htm

This song was written in 1908 by a man named Jack Norworth. One day when he was riding a New York City subway train, he spotted a sign that said "Ballgame Today at the Polo Grounds." Some baseball-related lyrics popped into his head, that were later set to some music by Albert Von Tilzer, to become the well known baseball song, "Take Me Out To The Ballgame." Despite the fact that neither Norworth or Tilzer had ever been to a baseball game at the time the song was written, it became the second most widely sung song in America (second only to the National Anthem). (1927 version)

Nelly Kelly loved baseball games,
Knew the players, knew all their names,
You could see her there ev'ry day,
Shout "Hurray" when they'd play.
Her boy friend by the name of Joe
Said, "To Coney Isle, dear, let's go,"
Then Nelly started to fret and pout,
And to him I heard her shout.

"Take me out to the ball game,
Take me out with the crowd.
Buy me some peanuts and Cracker Jack,
I don't care if I never get back,
Let me root, root, root for the home team,
If they don't win it's a shame.
For it's one, two, three strikes, you're out,
At the old ball game."

Nelly Kelly was sure some fan,
She would root just like any man,
Told the umpire he was wrong,
All along, good and strong.
When the score was just two to two,
Nelly Kelly knew what to do,
Just to cheer up the boys she knew,
She made the game sing this song.

"Take me out to the ball game,
Take me out with the crowd.
Buy me some peanuts and Cracker Jack,
I don't care if I never get back,
Let me root, root, root for the home team,
If they don't win it's a shame.
For it's one, two, three strikes, you're out,
At the old ball game."

~S~