Vision DSP 4.5 is the latest update to Opcode's Macintosh audio and MIDI-recording music application.

The upgrade's new features, include compatibility with the new ReWire software-based synthesizer spec, VST plug-in automation and the "ReCycle" type audio loop-editing feature.

The package is an audio and MIDI sequencer for composing, arranging and recording music compatible with real-time audio VST plug-ins and ASIO audio hardware, built to work with Opcode's new MIDIport 32 and MIDIport 96 USB MIDI interfaces.

It is also compatible with Digidesign's Pro Tools hardware system.

The Vision DSP 4.5 package includes demo software, samples and extras. Upgrade - from any version of Vision - costs $99.95 or $59.95 from the company’s Web site. CD versions of Vision DSP 4.5 and Studio Vision Pro 4.5 are due for release in the next two weeks.

At retail Vision DSP's suggested price is $199.95 but is also available as a $59.95 download from Opcode's site. The difference in price reflects that the downloaded version offers no technical support at all and offers only PDF manuals.