I was troubleshooting my 1999 iMac G3 DV trying to get it to play a DVD. I looked at the about information and found it's apparently a beta version of DVD Player.
Upgrading iMac G3 To OS X Tiger From External DVD Drive & Getting YouTube To Work! - YouTube
iMac G3 — Wikipédia
Summer 2000: Splintering the iMac G3 Line – 512 Pixels