Free (atm) sequencer/multitrack for y'all

This looks pretty pretty cool and is still free (in development):

http://www.museresearch.com/kvr/i/b/reaper.gif

REAPER (Rapid Environment for Audio Prototyping and Efficient Recording) is designed for the recording, arrangement, editing, mixing and rendering of audio.

Basic features:

-Support for an unlimited number of audio tracks.
-Audio tracks are all fully routable (multiple inputs, outputs).
-Volume, pan controls and envelopes per track.
-Supports audio processing plug-ins (DirectX, DXi, VST, VSTi, and Jesusonic) with automation, easy chain manipulation and editing.
-Pitch shifting and time stretching.
-Fast, reasonable and usable Windows-style UI, working well on both low and high resolutions or multiple monitors.
ASIO, Kernel Streaming, WaveOut, and DirectSound support for playback and recording.
-Reads WAV, OGG, MP3 and MIDI files, records WAV and MIDI files.
-Can render to WAV, OGG, MP3 if lame is installed.
-Full SMP support (can utilize 2 or more processors).
-Multi-layer undo/redo support.
-User creatable color themes.
-Advanced features:
-Unlimited send/receives per track, with configurable parameters (pre-fx, post-fx, volume/pan adjustment/envelopes, mix to mono, phase, etc.).
-Any track can act as a bus, for routing flexibility.
-Tracks can have one or more (mono or stereo) hardware sends, for analog mixing capability.
-Fully routable/FX-able folder tracks that can contain group tracks.
-Item grouping.
-Ripple editing.
-Grid/snap support with configurable options.
-Markers.
-Unlimited takes per media item.
-Auto punch-in/punch-out functionality.
-Automatic record monitoring modes.
-Selection length granularity options as well as grid snapping.
-Tempo envelope (for grid lines/snapping/ruler), play-speed envelope.
-Project consolidation/export options (for rendering all or parts of any number of tracks to WAV, etc.).
-A UI and architecture that allows you to easily cut loops of many tracks simultaneously, without having to write them to disk.
-Support for plug-in generated media (such as click tracks, etc.).
-Project tempo envelopes for variable tempos in track, grid/snapping that supports variable tempos.
64-bit floating point sample pipeline for high quality.
-Advanced recording and monitoring options; examples:
-You can route multiple tracks (inputs and/or media items) into a bus, and record THAT mixed down version.
-You can record the input signal, or record the post-FX, post-track-render signal.
-You can switch recording sources on the fly, even while recording.
-You can arm/disarm tracks' inputs while playing or recording.
-Other features:
-Human readable, human editable, backwards and forwards compatible project file format.
-Options to build peaks for recorded files on the fly.
-Lots of control for the user to specify where recorded files go, etc., when dealing with many projects.
-Template support to make it easy to load a project template and save it as a new project when you begin.
-Input/output channel name aliasing (why view your inputs as "MOTU 896: Analog 1" when you could have them be "Vocal Mic", etc.).
-Options for automatically backing up project files to alternate paths, time-stamped versions, etc.


http://www.cockos.com/reaper/

http://www.cockos.com/reaper/download.php