Another possibility (other than new HW or SW) is actually leaving the sweet spot and seeing some live music. I tell you, the soundstaging is great, the tone accurate, and it is very involving. It's odd to me the kind of megabucks some of us throw at our systems in an attempt to get close to the real deal when for the same money you could see a live concert every day of the year.
New Music vs. New Equipment
I assume that many people are like me in that we are always looking to optimize our audio systems. Unfortunately, to do so can require spending thousands of dollars. Furthermore, when all is said and done, the system sounds better, but it's never going to sound like real musicians playing real music. At what point is it better to leave the equipment alone and instead purchase more music? As an example, will I be better off spending $2,500 on new bi-wire cables, or should I buy 125 (@ $20 each) new albums? The new cables have the potential to make the 2,500 albums I already own sound marginally better, yet 125 new albums should yeild some great music. Which way should I go?