Dampening can be a hit or miss field. And the sheer number of possibilities that exist - some without ever spending a dime or several - is mind boggling. I keep playing with my gears and accessories and have slowly eliminated some options. But spent a few $$$ to find out. Platforms, footers, different surfaces, cabinets and such. But, I flat out refuse to stand on my head, no matter what's promised!
If you're using the PC as a music server (yes
, even Macs are personal computers, don't let Mister Softee tell you otherwise), even that could benefit from dampening. Best I can tell you is to start listening, playing with arrangements with a config, two or several. And if you do try something commercial, maybe try something you could return in 30 days. Or try an inexpensive option and play around with combos some more.
Your source will have the biggest benefit, and so on down the chain...
PS...just in case a few readers are left wondering who Mister Softie is, that would be Microsoft (MSFT ticker symbol).