Open Sound System is now freely available under GPL/BSD/CDDL license. Please go to the Developer Site to download the source code and build the packages.
The prebuilt packages available for download on this page are licensed under the 4Front Commercial License. These packages contain drivers which are not licensed under the various Open Source license. The packages come with a 1 year time limited license key and a permanant license key that will entitle you to free support and upgrades can be ordered here
Please note that the package you download here contains all the soundcard drivers. The software configurator will automatically detect your hardware and install the corrrect driver.
Please select the Operting System (and package format) you are running