With Slipknot playing and curating Knotfest this weekend—which starts in Iowa and moves to Minneapolis the next day—the Des Moines rockers certainly have a lot on their mask-covered minds. Fortunately, there's one less thing for them to worry about: With Randy Blythe's recent release from jail in the Czech Republic, Lamb of God will be able to play their highly-anticipated Knotfest sets.

"As soon as we found out he was coming home, for me, it was the best way to bring him home, to make sure he was on that bill," singer Corey Taylor says in the video above. "I've been friends with Randy for 10 years now. It wasn't a question of trying to replace that band [when he was imprisoned]. He's home, they've got their spot back."

Taylor also talks about Slipknot's reticence to record an album after the passing of bassist Paul Gray in 2010. "If we're going to make an album without Paul Gray, trust me, that is something none of us are still prepared for. It's going to be a very daunting day when we have to go into the studio without him because he was such a huge part of the process, he was the glue." To hear Taylor talk about how their recently-released 'best of' album was "the way to celebrate the music we made with Paul [Gray]," watch the video above.

We also spoke with Taylor about Slipknot's recently-released Wear the Mask app for the iPhone and Android. "You fill out a questionnaire and depending on how you answer that, it generates a mask made of different bits of our masks, but for you," Taylor explains in the clip below. "No two masks will ever be the same."

Although Slipknot haven't yet figured out where Wear the Mask might go from there, Taylor tells us some fascinating ideas for its future: "My dream is to have all these [personalized Slipknot] avatars be able to invade different video games and destroy the status quo. I'd love to see someone dressed in the Wear the Mask rig in the MLB 2012 [game] just ripping sliders off, and people are like, 'What the heck?' We want to be a virus, straight up. We want to be a virus that messes with people's heads."

BTW, if you want to stream Slipknot's inaugural Knotfest online, you can find out how to do that over here. It should be great and fainting-free: Given that Knotfest takes place in Slipknot's native Midwest and not Texas, Taylor probably doesn't have to worry about passing out from heat exhaustion at this show.