would books relating to either Digital Audio Workstations (like fl studio) or learning how to use synthesizer hardware/plugins be placed in the music section of the library, or the technology section?
Little of Column A, little of Column B. Some books on the subject are categorized under 780.285536 (specific musical programs) or 781.34536 (computer composition) for music, and others under 621.389 (audio and sound engineering) for technology.