Honestly, I think, at least from my perspective, the walk-ups are less about the player (even though they can request their own) and more about the atmosphere outside the fence for the fans...same with announcing names, music between innings, heck having a scoreboard even. My son on ocassion will say, "why do you play that song, everybody in the dugout hates it." But the music, I feel, "in game" is for the fans and not the players...as a matter of fact, I "let" the players submit some playlist request last year for pre-game and in-game music...out of about 50 songs they requested, I had to delete/censor 39 of them...if Lil' Wayne was on the list, I didn't even look up the lyrics.
But no, NEVER play a song over the PA system if you haven't either listened to it or read the lyrics. And yes, GunEmDown10 - Audicity is great!