I forgot to mention two other options for ppc multimedia: mazingo and snapstream.
snapstream is a tivo-like application that allows you to record television programs through a PC equipped with a tv or video capture card and quickly and easily convert them to PPC-sized formats.
if you already have a dvr application (for example if you own an ATI card that came with the appropriate software), you could still make mpegs or avis out of the programs and then convert them to ppc-sized formats using a freeware encoder like TMPEng. More information on making your own mpegs can be found at
www.pockettv.com.