Please share all the available information for these audio types.
That's a very ambitious request, and may take hundreds of pages to answer.
However each of the format you list has a Wikipedia file that you might
While '.pkf' files are not audio files, they are metadata files:
let me know any ubuntu command lint tools available to
convert the audio formats
There are two types of media files: "containers" and "streams". A "container" file is a bit like a ZIP or 'tar' file, and is just a structured collection of sections. A "stream" file contains actual media data, encoded in some way, and may be embedded in a "container" file.
In general media formats of either type in GNU/Linux systems are handled by libraries that are often called "codec" libraries. These libraries provide the ability to encode and/or decode the media contained in those files.
The Wikipedia entry above mentions that .ape
(Monkey's Audio) is supported by the ffmpeg
library, and so most variants of WMA and ALAC conversions, and conversion is described in:
PS: Searching Wikipedia and previous AskUbuntu questions often provides a lot of help.