A new updated version of the REX Shared Library for Mac OS X is available from developer Propellerheads. If you don't already own ReCycle 2.1, you'll need the updated Shared Library to use files created in ReCycle 2.1 files with Reason 2.5 and other DAWs (like Emagic Logic and MOTU Digital Performer, both of which support REX). This enables, of course, use of REX files from the Web and new sample libraries based on ReCycle 2.1. REX remains the most sophisticated major format for sharing loops for time-chopping, reordering, and independent pitch- and tempo-shifting.
The new version is free for download on the Propellerheads site.

MacMusic has been watching Rayverb since it was announced at NAMM. The standalone demo version became available February 17; now the full VST plugin version is shipping. Rayverb uses raytracing -- a process known for 3D graphical rendering -- to calculate the path of audio signal through a space. reverberation process. The software features settings for setting up this virtual space, by changing the location of the sound source, altering textures of the wall, or applying different acoustic settings, all in realtime.

The folks at MacCompanion have a contest: before April 30, write a 4-stanza score about the Mac, ideally with an accompanying MP3 file created in GarageBand or the like, and if the judges like it you could win some Mac loot. Details on their site below.

Steinberg has in the past offered a budget version of its flagship Cubase music production software, but hasn't kept pace with recent releases of Cubase SX -- until now. The company is now shipping newly-announced Cubase SE, with features borrowed from SX but customized for beginners and educational use at a lower price, EUR149 (even less for education). This version of Cubase SE shipped in Steinberg's Studio Case product but was unavailable as standalone.

The light version offers 48 audio tracks, unlimited MIDI tracks, 24-bit / 96 KHz audio, VST and ReWire 2 support. Nothing to sneeze at, and an excellent, competitive price, half of the budget version of Logic.