Operation Manual

Built in noise reduction for audio clips
Musical typing keyboard
Notation editing and printing (sheet music)
New effects (Tube EQ, Amp simulator)
New VSTis ( Messiah, Lounge Lizard, Acoustica Expanded Instruments, Alien 303 Bass synth)
Mixer tab ( built in track EQ, etc.)
Metronome count-in
Improved loop mode
Updated user interface look and feel
Support for WaveRT exclusive mode on Windows 7
Link clip feature
New ALT drag to make a quick copy of a clip
New +1 looper button on clips
Improved support for faulty VSTs
Lower CPU usage
Better hard drive utilization
Record directly to OGG mode.
Version 4.5 Changes
Support for saving projects to MIDI
New Primo Burning engine!
Can now select channel for mono audio clips
Bug fixes for some audio devices
Bug fix for freezing tracks.
Version 4 Changes
Support for MIDI - record and playback.
Integrated support for VSTi software synthesizers.
Integrated VST MiniMogueEx, VB3 organ, General MIDI synth
Presets allow you to make mega instruments, combining effects and virtual synthesizers.
Support for Vista's WaveRT low latency audio system.
Piano Roll interface for editing, quantizing and snapping notes.
Looping MIDI clips
Version 3 Changes
Brand New Interface
Support for ASIO low latency driver system
FlexAudio time stretching
Beat Matching and Key Matching
Detects beats in songs
Supports ACID and Apple loops
Downloadable Loop Library
Effects are accessed on Track details or Project details page
Envelopes work slightly different than in version 2
Transfer project feature
Record multiple audio tracks at a time.
Import MP3s, WAVs, OGGs or AIF files
Supports 24 bit, 192 kHz high resolution audio.