Searches the Freesound library (SFX, ambience, foley) with the user's connected API key. Every item carries what you need to JUDGE the sound without hearing it: the uploader's full description, tags, duration, community rating and download count, format/samplerate, and — when analyzed — AudioCommons descriptors (acAnalysis: ac_loudness LUFS, ac_dynamic_range, ac_tempo, ac_tonality, ac_single_event, plus 0-100 timbre scales like ac_brightness, ac_warmth, ac_hardness, ac_depth, ac_roughness, ac_boominess, ac_sharpness, ac_reverb). A downloaded flag says the sound is already in the pool. Licenses: CC0 needs nothing, BY needs attribution, BY-NC excludes commercial use — prefer cc0/by via the license arg when the project may be commercial. If no key is connected the tool errors — TELL THE USER to open Library → Generators → Sound Library and connect their Freesound key.