G4 and Intel compatibility

Hey there!
My new MacBook Pro is the first Mac I've owned. I'm using it for music creation and most of the software has system requirements for a Mac G4 processor. This may be a stupid question but will they run fine with my 2.16GHZ Intel Core Duo processor?
Thanks!
- Wil

Hello Wil,
And welcome to the Discussions!!
Your Macbook Pro will run G4 software (PPC) just fine. Included in the installation of OS X is a run-time environment called "Rosetta." Rosetta translates PPC code "on the fly" so that it can be run on the new Intel processors.
Obviously, these applications will not run as fast on your MBP as Intel-native software will, but Rosetta does a pretty good job. Depending on the software, it should run about as fast on your MBP as it would on a G4, due to the faster speeds of the Intel processors. These apps take a hit from having to run in Rosetta, but this is balanced by the faster machine.
You don't have to be concerned about whether software is "Universal" (written for both PPC and Intel) or PPC only; OS X will detect which is the case and run it in the appropriate environment, transparently. Just install and launch the software; OS X takes care of the rest.
There are some circumstances, however, where you might need to do a little "tinkering" to get an application to install. Many apps make use of OS X's "Installer" application to install themselves. If this is the case, and the application isn't "Universal," you might get an error message upon trying to install it. Flip4Mac, for example (a Windows Media replacement and "helper" application), uses the OS X "Installer," and it won't want to install itself. No problem; just navigate to the "Installer" application in /Applications/Utilities/, click on the Installer application, press Apple-I to open a "Getinfo" window for it, and click the "Open in Rosetta" button. This will cause the Installer to open in Rosetta, allowing you to install Flip4Mac.
Still using the Flip4Mac example, the same "Open in Rosetta" choice applies for its use. Flip4Mac installs components in Safari so you can view Windows Media files in that browser (like CNN.com video). Under normal circumstances, you will not be able to view these videos in Safari. With Flip4Mac installed, however, you can set Safari to "Open in Rosetta," and the videos work perfectly.
Eventually, all software, plug-ins, components, etc. will be "Universal," and our need to use "work arounds" will diminish and disappear. Since everything will be running natively, and thus much faster, we will all be happier.
Scott

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