Audacity is an open source sound recording and multitrack editing program. You can use it to record your voice or other sounds, edit sounds found on the internet, post processing (normalization, trimming, fading) and exporting them ready to be used in your game. It also supports effects plugins to generate more sound effects for your games.

• See a complete tutorial guide and video here.
• See the manual and find tutorials to get started here.
• Get the tool here.