Burning in your headphones is nothing more than the act of exercising the moving parts for an extended period of time. You can burn them in on your computer with a pink noise generator - there are free noise generators for every operating system. You don't need a lot of controls and settings, just something that generates continuous noise at controllable volume.
If you have a spare computer (as a fileserver or whatever), and you don't need to use these headphones right now, you can break them in around the clock. Put your headphones on, plug them into the computer, generate noise at a listenable volume, then put the headphones down (put them in a box if noise bothers you). Then let the computer run for a couple days. Otherwise, keep the noise software handy and run it whenever you're away from the computer.
Remember that listening to music is also a way to break in your headphones. So listen to music whenever you want to, and whenever you're going to be away from them run the pink noise generator.