Upgrade path from Windows laptop music server

I think my old HP laptop is the weak point in my system.  It's an i5 with 8meg connected to a Benchmark DAC (may be upgraded) over a Wireworld USB.  I'm running JRiver to play my 200 ripped CD'S, listen to Radio Paradise and WWOZ Internet radio, and have just signed up to Qobuz high-res.  I thought I was computer literate but the array of new options for computer audio is intimidating.  So, asking for guidance.  My goal is the best sound, which I see as delivering the best signal to the DAC.

Should I keep the laptop but configure a network bridge from SOtM, Sonore, or others?  This is all new to me.
If so, should I/ can I run Ethernet from nearby router to bridge?
Will JRiver still work?
Are there great laptops that solve the problem? (assuming there is a problem)
Do I trash the laptop altogether?

I want to end up with something with a good user-interface free of arcane techy complexity.

Thanks for any advice or past experience