Android :: Android 2.x - Lost The Ability To Route Audio

This could be considered a bump, as my previous post (regarding audio on 1.6 never got a response - see http://groups.google.com/group/android-developers/browse_thread/threa... ) never got a response.

In Android 1.5 we had the ability to route audio to any of the available output devices - Speaker, Earpiece, Wired Headset, Bluetooth A2DP.

In Android 1.6 the Android team made things more difficult, but it was still possible (there were comments about a re-write of the Audio subsystem)

In Android 2.0 the workarounds for 1.6 stopped working, and comments in the source/documentation indicated "thou shalt call these alternate methods" - the alternate methods didn't seem to work properly and only gave access to a subset of available devices.

I have just downloaded the latest source and can now see why the "new" methods don't work properly for me - they themselves seem to have been deprecated and are just stubs that do nothing. I also note that the documentation has also been updated to indicate these methods are no longer viable.

So my question is this: Is there *any* way in Android 2.x for an application to request that audio be routed to a given audio sink. Specifically, if I want to route audio to Speaker OR Earpiece OR Wired Headset (if available) OR Bluetooth A2DP (if available) -- can I do it?

I'd be interested to hear if Google Voice still allows switching voicemail playback from Speaker to Earpiece on Android 2.x devices (the Verizon Droid for example).