I would like to know what's the best way to make an audio disc on a dvd.

I presently use Sonic DVDit Pro edition to author dvd's and have ripped music to *.wav cd quality which is 44.100 KHz

DVDit! converts it to 48 kHz PCM audio or Dolby Digital audio,
depending on the project settings.

So if I compile my ripped music collection with DVDit on a dvd, I guess it will upsample those to 48 kHz.

Are there better tools for this purpose?

The reason being I find the size of audio cd's limiting.