rplay-contrib binary package in Ubuntu Focal riscv64

 Contains mailsounds and Mailsounds each of which can be used to play
 sounds on a system when new mail arrives.
 .
 RPlay allows sounds to be played to and from local and remote Unix
 systems. Sounds can be played with or without sending audio data over
 the network using either UDP or TCP/IP. RPlay audio servers can be
 configured to share sound files with each other.
 .
 Support for RPlay is included in several applications. These include
 xpilot, xlockmore, xboing, fvwm, and ctwm.

Source package