libkarma-dev binary package in Ubuntu Oracular riscv64

 libkarma is a C language library that provides (read/write) access
 to the Rio Karma music player using either the usb (with OMFS) or
 network (PEARL) interface.
 .
 libkarma allows developers to do the following:
 .
   * login
   * read, write and delete music or data files
   * read and write file information
   * write music or taxi files with one function, including setting
     all metadata
 .
 This package contains the development files needed to compile
 programs using the facilities provided by libkarma.

Source package