If the machine has a DVD drive in it, Apple DVD Player should have been installed with OS X. Did you check the options in the installer before you installed OS X? Perhaps some of the extra applications were not installed (they're mostly on the second CD, IIRC), though I wouldn't consider DVD Player an "extra."
Also, OS X 10.3.9 runs good on that machine, and Tiger should run pretty well too.
And just FYI, if it's the 400Mhz model at least, then it came with MacOS 8.5. I don't recall what applications came bundled, but you wouldn't want to use OS 8.5 or 9 anyway.