If you haven't been picking these up as they're announced, Amazon decided to finally give you a way to get all 25 with one click over at their 25 Days of Free page (amazon.com) - scroll down past the days to find the checkable list and "Buy selected song" button.
Oh, one more thing - if you're GIFTING MP3s, Amazon says that you can get $2 off with the code GIVEMP3S. Details about THAT over here.
Oh boy I hate me some Panic! At The Disco. And as for Men Women & Children, I think I just might. I hated Glassjaw but, yeah, I have liked the side-projects. Plus, hey, supporting the Long Island bands and all.