Audacity

Advaita XT is one of the most used audio editors due to its multiple platform character. Using a Linux, Windows or Mac, you can enjoy its features on a platform and it's completely free.

In addition, it means multitask and multiform at, you can work with different tracks and formats at the same time and save the output file as any audio format.

If you have a mixer or microphone, you can use them as audio inputs for their audio creation. It can capture at 16 different channels together.

Audacity supports the XWAV, AIFF, AU and OGG Verbs. If you want to work with mp3 files you will need to install lame encoder.

Cut, Copy, Paste, Add Equation, Fade, Crash, Make whatever you want and create your own audio masterpiece.

If you feel that these features are not enough for you, install some plugins and give it power.