Sorry to have taken so long to reply. I like the idea of the multiplier but it is not critical to our mission. We will probably standardize on the "kHz" suffix even though the actual number represents "samples per second" rather than "frequency."
The reason for wanting this FORMAT information as a FLAC tag is to simplify the management of a very large collection of FLAC files in the form of a media collection on a file server used for personal libraries as well as libraries or FLAC archives for professional uses. In our specific case, we want to allow for users that may have multiple versions of a particular recording with different formats (sample rate, word length or bit depth, stereo vs. surround sound, etc.)
We believe it preferable to search the metadata (FLAC tags, an extended set of Vorbis comments) for all of the different search criteria one might wish to specify regarding the payload, including the FORMAT tag's values.
What we really need is a dedicated search tool with a simple GUI for searching a large collection of FLAC files for desired content stored in a library comprising several layers of nested folders, with the capability of using several criteria at the same time, something like this:
Search --> ARTIST and/or/not TITLE and/or/not FORMAT and/or/not --> Results
where each of the several criteria are selected from a wide range of tags, such as ALBUMARTIST, ARTIST, ALBUM, COMPOSER, TITLE, PERFORMER, FORMAT, LOCATION, etc.
A typical application might be a search for all of the content with songs composed by Paul McCartney or perhaps those performed by Bob Dylan at a specific venue in a given year. The search tool should continuously index the content of the entire library and yield near-instantaneous results, listing the results by directory paths (folder names) as well as the file name(s). The resulting links should open the file for playing in the default FLAC media player when double-clicked or permit dragging the resulting file into a media player playlist folder or window.
Note that we expect the world to soon gravitate to FLAC as the file format for choice for downloads and streams. No other choice seems reasonable to us, as we anticipate the demise of optical discs in all forms. Optical discs don't make any sense to us as they are nothing but relatively costly digital media storage devices that are fragile and clumsy to handle and to search for desired content on shelves or in boxes. They are also costly to ship and to hold in inventory for retail purposes. Naturally, there are numerous market-driven factors that interfere with the time line for accomplishing what we view as a no-brainer.
Does this make sense to you?
I've attached an earlier screen shot from mp3tag to illustrate the length to which we wish to embed metadata in our files here at radio station KVMR-FM radio here in Nevada City, California.