haha are you for real?
Mp3 is the name of a file format, hence, Noun. It's not descriptive in anyway what so ever, unless you're a nerd who appreciates the encoding of Movie Pictures Expert Group - 3.
The only douche is YOU. You listen to an audio representation of the data that's stored in MP3, so you ARE listening to an MP3, whether it's through an MP3 player or otherwise.