Reaper is a powerful application that allows you to record, edit, improve your audio files and create your own compositions based on loops. The program includes in just over 1MB a lot of quite useful tools for the treatment of audio files and it is also totally free.
Reaper supports ASIO, Kernel, WaveOut and DirectSound for recording and playback and allows the inclusion of all types of WAV, OGG and MP3 files. In addition, it supports multitrack editing with specific controls for each track such as volume control or effects manager.
In this way, you can insert all kinds of sounds and loops to create your own compositions, do live DJ sessions or modify your sound files by recording the result. In addition, Reaper is already portable, so you can run it without problems from a USB key without having to install the program.