LibPD is available for the Android platform, it's meant to be the vanilla PD, without a UI: you need to write code.

To play sound on and Android device you would include patches, and possibly sound samples, that the patches use. Just like using PD on a laptop/desktop computer.

Bear in mind that Android devices do not have immense processing power, so trying to reproduce a whole orchestra might sound a bit crackly.

The open sl branch is mentioned in Peter Brinkmann's blog

I suspect it will be part of the main branch once the code is stable.

As to your Eclipse problem, not sure what could be causing that. I do have the other PdCore project in Eclipse, but closed the project. I created a new project called PdCoreOpenSl in Eclipse, and reference that one.

NoisePages is pretty hard to use: when I tried to create a new account, it served up a page not found error, and must have failed as I could not log in. If only Peter Brinkmann used these forums instead.

As to using pd on Android, be sure to check out the opensl branch. I originally tried the default branch, and was about to give up: extremely crackly and broken up sound. The opensl implementation, on the same device works a treat.

To get the opensl distribution use:

$ git clone -b opensl git://github.com/libpd/pd-for-android.git
$ cd pd-for-android
$ git submodule init
$ git submodule update

In essence it's the first command that specifies the different branch to use.