You could try it the old fashioned way... listening to one of the 2 Mankato stations on the Twins radio network (AM 1420 or FM 102.7).
You can purchase a portable AM/FM radio on Amazon for as little as $10.
I doubt there is anyone in MN, or much of ND or SD, who can't listen to the Twins free.
If there are, MLB radio is $20/yr, and you can stream Corey and Dan anywhere in the world where you have an internet connection.
Edit: ninja'd