iPods (etc) not allowed?

I play 3/6 at Soaring Eagle and I'm confused about this. Last week, as I walking to my seat, the floor-lady saw that I had earbuds in and said they're not allowed. I asked why, as it's not posted on the rule-board. Her response was because "it's just not". I shrugged it off and went to my table as I wasn't about to argue with her.

My question is, have you guys ever heard of MP3 players or the like being banned in a poker room? I thought it was strange and I'm wondering if I should ask the manager. When I'm on a bad run of cards I like to listen to music to keep me focused and awake.

Thoughts?