BIAS (www.bias-inc.com) has announced Peak 4.1, an upgrade that includes Roxio Jam and SFX Machine Lite at no additional cost. Jam will let Peak users burn Redbook-standard audio CDs, and SFX Machine Lite will provide 21 additional DSP presets to Peak's processing capabilities. The upgrade is free for owners of Peak 4.0 ($19 on CD-ROM) or $149 for owners of previous versions… A free update to Project5 1.5 (www.Project5.com), available from Cakewalk, features a revised step sequencer, a new Resource Browser, the means to disable unused synth outputs to ease CPU load, and the ability to save a track's instrument, effects chain, and plug-in settings with a single click… VirSyn (www.virsyn.com) is shipping Tera 2.0.1 and Cube 1.5.1. Tera now offers six types of synthesis and supports ReWire 2 and RTAS. Cube now has the ability to resynthesize audio files no matter what their length or level of complexity. Other new features include automatic extraction of formants and up to 512 partials, each with envelopes for frequency, level, and pan… Applied Acoustics Systems (www.applied-acoustics.com) has announced a $99 upgrade to Tassman 4 (free if you purchased Tassman 3 this year), which features an expanded synth and preset library, live audio processing, and new effects modules. Applied Acoustics is also offering Tassman downloads to current owners of Clavia Nord Modular and Native Instruments Reaktor for $199, $300 below MSRP … IK Multimedia is shipping a Mac OS X — compatible version of AmpliTube (www.amplitube.com), a VST and AU plug-in that turns your computer into a virtual guitar amp and effects rack. Upgrading from the Mac OS 9 version is $79, and you can download additional presets for free. Another excellent source is www.GuitarLearning.co.uk, which offers 250 AmpliTube Presets for $9.95.