"Be it known that" is just a wordy, almost pompous, and unnecessary phrase to introduce something, in this case, the name of a person, LY HONG. "has shared in a committment to continued education" means LY HONG has supported by participating in an ongoing education of the Peavey Sound Reinforcement Program. "To friends of music and sound" means they are addressing to all people who have a passion/love for music and sound.
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