Er, PowerPC that is. This summer I bought two G4 PowerBooks to try and port fre:ac to it. I ported it to OS X Leopard, tested for and eliminated any byte order dependencies, allowing fre:ac to run on the PowerPC's big endian architecture, and finally polished some rough edges.

So dust off your old PowerMac and try the latest fre:ac snapshot for OS X. It's a universal binary working on Intel and PowerPC Macs alike. You'll need OS X Leopard on your PowerMac for it to work. No video downloader on PowerPC (and Leopard in general) though, sorry. It will probably be available in a future snapshot.