Ideally, archived audio files should be as close to the original CD as possible, with complete and accurate metadata, encoded in a lossless format (usually Free Lossless Audio Codec, or FLAC). This requires a lot of space, the cost of which would once have been prohibitive, but the plummeting price of storage makes it feasible to keep those files as a backup, and make copies for everyday use. You can also encode copies using lossy codecs for playback on devices with limited storage. A ‘secure’ CD ripper ensures audio files are free from errors by reading each sector of the disc several times, and comparing the results with data collected from other users. There aren’t many of these tools around for AmigaOS 4.X. However, ADRipper is an interface for easy ripping (extraction) and encoding of audio CDs. Track names and other metadata can be retrieved automatically through the CDDB database. If your CD-ROM drive is connected to a sound card, you can also listen to the CD from within the program. Make sure you check out intellectual property law in your country before you start ripping.