Every once in a while Beatport will have a remix contest with some sick prizes. right now there is one for Zedds Spectrum. It works by supplying beatport users with the stems of the song and you have a couple of weeks to finish the remix. even if you don't enter you can download their stems which are sick and you can make a remix for fun or to include in your live set. you can also use the stems to make new sounds through shit like slice to midi, chop them and use them in the simpler instrument or even just throw it into arrangement mode raw.