Not trying to be a buzzkill but the odds of them not playing Madhouse are very, very slim. Maybe he confused Medusa or something.
If they did mix it up to this setlist I'd be JAKKED!
5/2 - Sevendust
5/24 - Dark Angel @ MDF
6/17 - Meshuggah & BTBAM
6/29 - Primus
8/4 - Soundgarden & NIN
9/27 - Clutch & Janes Addiction