Stock Music — Royalty-free music.
Zencastr — In-browser podcasting.
Audio Library — Browse and download free music and sound effects.
Adobe Spark — Fast way to tell stories with graphics, text, videos, and animations.
PSDTUTS — Free tutorials in design and illustration, 3D, motion graphics, photography, and audio.
Coffitivity — Coffeeshop background sounds.
Noisli — Background noise & color generator.
Audacity — Free audio editor and recorder — great for all types of audio editing and production.
VLC Player — Cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.