If pressing play on a shuffled playlist isn't enough for you, it's time to step up to the DJ deck.
With these music mixing apps, you can loop, cue, crossfade, pitch-shift and more to remix your digital library. Even apps for tablets and smartphones are in the mix for on-the-go editing, which is especially helpful when you're out and the current playlist isn't cutting it (with the host's approval of course; Mashable does not endorse party playlist mutiny).
While Ableton -- the professional-grade software used by many of your favorite producers and DJs -- will run you close to $500, these apps won't drain your iTunes gift card balance, and some are even free.
Once you get the hang of mixing, record and upload your mixes to a service such as Mixcloud, and join its community of amateur and professional DJs. Also, consider investing in a MIDI DJ controller. It will be pricier than the software, but the ability to fiddle with actual knobs will let you be more adventurous -- no more worrying the mouse will disastrously slip while adjusting the tempo.
Soon, you too can be an amateur iPad DJ like the ones from HBO's Girls.