@lalitk +1
Some people have mentioned using Conductor to tag files. Well TBH this should have been done when you ripped your CDs.
However you can always change your tags by using a computer to access your Aurender's HDDs/SSDs via it's IP address.
My CD collection was ripped using an Aurender ACS 10, it did a great job ripping, but it could only tag a few bootlegs and zero Japanese CDs.
This only applies of course if want to show the correct release pics in the Aurender's display.
At least half my CD collection are bootlegs and Japanese issues. There's no tagging program that can do this with accuracy.
The only way I know is to use MP3 Tag to tag the CD then enter it's Discogs ID. Discogs is the greatest resource to ID music and both MP3 Tag and Discogs are free.