Brake issue

I've had my first problem with my DeLorean since I got it running again. Yesterday on the way to work, I noticed that the brakes were feeling *really* soft. Almost scary soft. This morning I checked the pedal, and it pretty much went to the floor. So I got a ride home from work and will be driving my VW until it's fixed. :( I checked the fluid, and it was pretty much empty! I put an entire bottle of brake fluid in it so I definitely have a new leak, not a progressive one. It is leaking from my passenger side front wheel area, but I couldn't really tell where exactly laying in the parking lot at work. The last few times I've driven it I heard a rattling coming from that area, but couldn't figure out what it was, so it could be related. We put new stainless braided brake hoses on when we rebuilt the front end, so hopefully it's not the hose. I'm guessing something came loose, or the hard line is having problems. Anyway, I'm pretty sure that I can get it home okay without having to have it towed, but I'm going to wait until 3:00 am when there aren't any other cars on the road, just in case. It kind of sucks, the drive home from work today would have put me over 48,000 miles. Oh well.