I love Acid. Tho I like Pro Tools also Acid is a lot easier and is just as good of a tool IMO. Anyway
2.0 What’s New
Multitrack audio and MIDI recording
Input monitoring for audio recording
Multiple media clips per track (including copy-and-paste of events between tracks)
Automatic crossfades between overlapping events
MIDI editing on the timeline
MIDI track envelopes and keyframes for continuous controller, program change, and VSTi parameter automation
Processing and filtering for MIDI events
MIDI input filters for tracks
Drum grid timeline editing mode with drum map editor
Program map editor for external MIDI devices
MIDI export
Project sections for easy arranging
Envelope automation recording
Freehand envelope drawing on the timeline
Enhanced paint tool for MIDI, one-shot, and Beatmapped clips
Dynamic playback optimization maximizes audio performance
Support for control surfaces including the Mackie Control Universal and
Frontier TranzPort
Gracenote® media recognition technology for extracting audio from CDs (not available in trial mode)
Film-style panning mode for 5.1 surround projects
a lot of midi stuff really that they didnt have before. moving acid along the way to compete with more of the "high end" software