Go to DI.FM and choose one of their many channels. You can surf the genres and practice to all different types. It's free and will better prepare you for the different stuff that the DJ's will play at the next party you attend. After all, you don't have control over what the DJ plays, just how you glove to the music.
Holy shit, this thread is old. Its actually the first one I ever started LOL. Lately Ive been diggin into some Drum and Bass for my show, still doing them to Trance and Dubstep as well. Techno and Tech House are great too. BL has expanded my music taste massively
I started listening to Liquid dnb because of it...
When i was really high one day (Vapourizer FTW ) i listened to the dnb remix of Adele hometown....
One of the biggest endorphin rushes of my life i think