Is it worth it to add a music server just for FLAC files?

Hopefully someone can help with my question.

My current system is a Krell Digital Vanguard Integrated Amplifier and Wilson Cub Series 2 speakers. The Krell has a USB input that I have connected to an external hard drive that contains all of my FLAC files. I control what is playing with the mconnect app on my phone and can stream from Qobuz/Tidal/Spotify if I need to. It all works fine and sounds great to my ears.

My question is other than some GUI navigation improvements what would be gained if I ran my FLAC files through a music/network server (Aurender, etc) before inputting to the Krell? My intention at the moment is to continue using the DAC in the Krell. Not interested in Roon.

What would a music/network server add in my situation?

I know the real experiment would be to get a music server and let my ears tell me, but just trying to think this through right now.