REAPER is a powerful but sensible Windows application that lets you record, arrange, edit, and render multi-track waveform audio.

Features:

Supports ASIO, Kernel Streaming, WaveOut, and DirectSound for playback and recording

Reads WAV, OGG, MP3 and MIDI files, records WAV and MIDI files

Lets you arrange any number of items in any number of tracks

Supports audio processing plug-ins (DirectX, VST, and Jesusonic) with automation

Volume, pan controls and envelopes per track

Multi-layer undo/redo support

User creatable color themes