A ReFill is kind of a content package for Reason Essentials and Reason, which can contain sounds and effects patches, samples, REX files, SoundFonts and demo songs. If you like, you can compare ReFills to ROM cards for a hardware synthesizer. On your computer, ReFills appear as large files with the extension “.rfl”.All sounds included with Reason Essentials are embedded in a ReFill named “Factory Sound Bank which was copied to the hard disk during installation.Additional Propellerhead ReFills are available for purchase. You can also download ReFills from other Reason Essentials users on the Internet, purchase them from other sample manufacturers, etc.
Be aware that some ReFills may not be compatible with Reason Essentials, since they contain patches for devices that are only included in the full version of Reason.
• Samples (Wave and AIFF files) are compressed to about half their original file size when stored in ReFills, without any loss of sound quality whatsoever.In Reason Essentials, you can use the browser to list and access the embedded sounds and other components within the ReFills, just as if the ReFills were folders on your hard disk.