sound volumes mix could be better balanced

Some sounds are very loud relative to other sounds and this mixing of volumes could be a little bit more balanced so if is more pleasant to the ears. The letter selection sound is a bit loud compared to the other sounds for instance.

Look for sound files and audio playback code in the repository, likely in a directory like 'sounds' or 'audio'. Identify the specific 'letter selection sound' mentioned. Compare its volume levels with other game sounds in the code or configuration. Adjust the volume parameters to achieve a better balance, then test the game to ensure the mix is more pleasant.

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