That dolphin looks a-ok to me!
I'm about to put a disclaimer on the tutorial that says "please don't whine if you lack the skill set to complete this project". The OP already clearly states that it is assumed that the person reading already has some experience with simple electronics and soldering, and it assumes that the person reading knows how to set up and configure sound cards. It also states that in my experience Windows XP 32 is the only operating system that gives 100% reliability using the c-media card. If your completed DAC "just stopped working" it's very likely because of a deficiency in one of those three things. I still have the first DAC I cobbled together a few years back, and I still use it. I've even used it for concerts where reliability is paramount. No one said it's easy, but (and I know this'll shock and amaze you) not everything in life is. DIY, by it's very nature, is rarely the easy way to accomplish something.. but it is rewarding to those who are into it because it makes us feel good to use the things we build.
I know that you know we're here to help anyone, but please refrain from discouraging everyone else simply because you're having trouble.