Today I quickly added a few sound effects. You can turn these ON/OFF as desired. The sounds (although few) are enabled by default.
There is also the ability to play from a choice of two background sounds. Let me know if I should add more, give it a try! The sound-effects came from a free itch asset library that should not be redistributed. The credits.txt file lists all resources, and credits for your reference.
https://lostwords.itch.io/scrabblescramble
(( Do not redistribute the .wav files included, they are for this game only. ))