Yeah the problem you're seeing is backporting an app can sometimes be quite complicated - and a lot of people don't want to go through the effort of doing that for a device that is not used by many people anymore. The N8x0 is somewhat of a dying breed.

I personally just barely started using mine again because I prefer my own Pandora Radio client to the Android Pandora client on my G1. There is N8x0 instructions in my links in my sig.

However, what you'll find is that I am not maintaining pianobar in the Diablo repo's simply because pianobar depends on libao which is not on Diablo. Meaning that I would also have to go find and grab libao and re-package that for diablo too. I did find a deb out there in a long-since forgotten repo that I link to for people to use.. and compiled specifically for diablo just to have it functional.. but I don't keep up with it.

So, while my python front-end works perfectly as-is on the N8x0 devices (I use it).. pianobar was a compiled app that does not. Unfortunately due the change in the processor from the N8x0 device to the N900, C++ and compiled apps are not simply portable from one to the other and require maintenance.. Thus.. it's less attractive for developers to be maintaining several builds from several platforms - especially old dying ones.