I just recently got a pair of awesome over-ear My Little Pony head phones from Hot Topic last month, and I like them. But for some strange reason, for the past couple days, they've been acting really weird! Now when I listen to music on them, both on my computer or my CD player, the sound is more muffled than usual, and the vocals of the songs I listen to are barely audible except for the instrumental part! I don't know how this happened or why, so I started using my dad's headphones, but for some reason the same thing's happening to them too! Help me!