Is NOBODY wrong in the post ? POST : TL; DR at the bottom.

So a little backstory, I'm a DJ. I produce music both for myself and others, and I also do live shows. Usually I charge between $150-250 a show. There is a house of guys across the street from where I live, so whenever they throw a party, I DJ. I've done around five shows, but since these guys are my friends, I haven't been charging them. At the last party, I did my thing for a couple hours then went home early. I left my gear there so the people still there could listen to music. I know it's a stupid idea, but I had done it for all the parties before this one and there had never been any porblem. This time, I came back the next day and there was alcohol spilled all over my MacBook pro, my speakers, and my turn tables. My MacBook is completely toast, and my turn tables are extremely sticky. I brought up the mac to the guys and it turns out none of the guys saw what happened, so they agreed to split the cost and pay for it. Today I found out they planed on having me pay for part of it, to which I responded by saying that it wasn't my fault that my equipment was broken. I feel like they should be responsible, because I had asked them to not let anyone touch my stuff, but I also feel like I share a little bit of the blame for leaving my stuff there. Am I the asshole for asking them to pay for the computer?

TL;DR: Mac broke at house party. No one knows who broke it, so I'm asking the hosts to pay for it. They've asked me to pay for part, but I feel like they should cover it all. AITA?