If anyone is interested,
I have figured out how to install OwnCloud on the MBL. It's not a very difficult process - I only bricked my box once - and I now have a personal Dropbox-style server with 3 TB of space. The server is free, and there is no monthly fees, or registration, or anything. It can be installed alongside the existing WD Web UI and WD services.
If anyone is interested, I can create and post a guide.