Input: Relationship: 'be flavor of', Argument/Subject 1: 'linux', Argument/Subject 2: 'unix'

Answer: It is the most feature-rich CD player that runs on Linux , FreeBSD , Solaris , HP-UX , UnixWare , AIX , IRIX , Tru64 UNIX , SCO Open Server , BSD/OS and most other UNIX system flavors .