The following are the sound effects/music and the places in which they were obtained...

Effects/click.wav
https://freesound.org/people/OtisJames/sounds/215772/

Effects/generator1.wav
https://freesound.org/people/HerbertBoland/sounds/114594/

Effects/saw.wav
https://freesound.org/people/Marregheriti/sounds/266104/

Effects/splash.wav
https://freesound.org/people/swordofkings128/sounds/398032/

Effects/Metal_BigHit.wav
Effects/Metal_SmallHit.wav
[Both modified from] https://freesound.org/people/newagesoup/sounds/337856/

Effects/mechanic-doors.wav
[Modified from] https://freesound.org/people/marcgp13/sounds/185756/

Music/Fly.ogg
Music/Fly_1.ogg
Music/Industria_1.ogg
Music/Industria.ogg
[Modified to OGG from original MP3] https://opengameart.org/content/techno-space