Probably one of the most time-consuming and laborious steps is to supply the ripped audio tracks with comprehensive metadata based on the correct discographical information for each recording.
The album covers are scanned with a professional photo scanner (Epson Perfection V750 Pro) at a resolution of 1.200 DPI (Dots Per Inch). The images are carefully cropped and corrected for scanning flaws using Adobe Photoshop. Before the images are added to the metadata of the audio tracks, the scans are scaled down to 300 DPI in the JPEG (Joint Photographic Experts Group) format to keep the resulting size of the compressed FLAC files as small as possible. The original loss-less images are preserved for archival storage. An example for the quality of the high-resolution scans is shown here.
The metadata editor software Mp3tag is employed to perform the following tasks:
Despite its generic name (“Mp3tag”), this powerful tool allows to display, edit, modify and convert the metadata structure of virtually all known audio file formats. In the case of the FLAC digital audio format, the metadata container consists of so-called Vorbis comments.
Finally, the meticulously tagged recordings are ready for careful listening, evaluation, cross-inspection and verification.