Updated: See http://createdigitalmusic.com/snowleopard for a running report.

Apple’s “Snow Leopard” 10.6 ships Friday, which means it’s time to start compiling information about the new OS flavor. Just don’t upgrade too fast, as always.

Want to push an operating system to the breaking point? Ask a musician. Between the demands of real-time performance and the complex ecosystem of mix-and-match hardware, software, and plug-ins, odds are your local audio geek will break an OS faster than anyone else. Not every operating system upgrade is going to have a big impact on music software, but keep in mind that even subtle changes can cause issues that may interfere with your work.

Of course, all of this means music users should treat any OS update with caution. :

• If you’ve got a critical, primary production machine, your best bet is often simply to wait. Confirm that software works before you upgrade rather than after.
• If you’ve got some time to invest in an upgrade or have more than one machine, be sure to do a full backup and system image so you can revert to the previous, known working OS.
• Best solution: Boot off an external hard drive. Don’t commit to installing internally until you’re sure everything is working. Once you are, go enjoy. (as noted in comments, and yes, I should have said this initially… still, the latest 10.5 build is still the preferred OS for now.)

So, sit back. Enjoy life. Go for a walk on a beach. Recline in your favorite chair with your MacBook running Mac OS X 10.5 Leopard. Isn’t it great? Need to waste time? Plants vs. Zombies is out for Mac.

What? Still want to upgrade?

Fair enough. We’ll be tracking changes to Snow Leopard and which of them may impact audio.

The short version: Snow Leopard introduces only small changes, but if a developer hasn’t been on top of those changes, you could see issues. And as for the 64-bit mode that’s attracting most of the attention, the short answer is, you can’t use it for music yet.

Native Instruments and Plogue have each responded to CDM with information on their software.

If you really like the idea of creating your own Logic EXS24 sample patches but end up not because it’s really, really a pain in the ass, you will love Keymap from Redmatica. The demo I saw took a single audio file of half a dozen instrument samples at different pitches, then automatically sliced them into regions, detected the root pitch of each region, mapped them to keyboard, and created seamless loop points—all in about the time it took you to read this.

That means you can do a recording in one pass that samples different pitches of your source (even in a random pitch order) and let Keyspan handle all the grunt work of setting up a basic patch.

Keymap is shipping for the NAMM show. Although there is currently no U.S. distribution, you’ll be able to get it online for 200 Euros at the Redmatica Web site.

More at www.redmatica.com

Ed: Read that first paragraph again — Keymap works from a single file of audio, not a bunch of different key samples. And we didn’t even get into surround support. Yeah, we can do some damage with this. More pics from Josh after the jump. -PK