The folks responsible for peer-to-peer downloads of (mostly) appropriated music and videos are in pre-alpha with BitTorrent Sync, which aims straight at Dropbox and its ilk for multi-device file synchronization. They are looking for early testers and promise native clients for Windows, OS X and Linux, with hints of smartphone support.

Today, BitTorrent Sync is in a pre-Alpha stage. And we’re hoping that users like you can help us build something sick. If you’re comfortable using early, incomplete software, and if you’re committed to helping us figure out a better way to sync, we want to hear from you.

If you are interested, sign up here.