HTC 2125 / 2100 (Faraday)

I just bought the 2125 and love it so far. Except for one thing. I have a pair of Stereo headphones, but when I play wma's the sound only plays in 1 ear. I checked the headphones in my old motorola and they work fine there (so it's not the headphones). They are Motorola 2.5mm headphones so I don't see why that should be an issue.

Anyone know if there is a setting somewhere I can't find? Is this a hardware problem.

Thanks.