Ableton has announced the immediate availability of Live 2.1, a free update to its popular sequencing instrument for Mac OS 9 and OS X. Version 2.1 brings full ReWire Master and Slave support, allowing Live 2.1 to run seamlessly with Digidesign Pro Tools 6.1 or any other ReWire application. The update also offers support for Sound Designer II files under OS 9 and OS X. In addition, Live 2.1 supports Direct I/O and easily connects to Digidesign hardware.