Here's a list of songs from performers featured on ESPN's College Baseball coverage, along with links to the artists' websites and links for you to download and buy the songs and/or albums:
Owen Campbell: "Remember to Breathe: and "Wreckin' Ball" from "The Pilgrim" album. (iTunes | Amazon)
Darlia: "Stars Are Aligned" from the "Petals" album. (iTunes | Amazon)
Thousand Foot Krutch: "Untraveled Road" from the "Oxygen: Inhale" album.