Ok
@H20Fidelity I just tested the S3 hooked up to my HA-2 and used Poweramp which is a stock android app that does not utilize any special drivers to talk to it - just stock Android 4.3. I'm pretty sure and if I'm not someone please correct me that if Poweramp works your stock android player will as well. Bear in mind you are restricted to the android framework as far as audio goes but as you are only playing flac.
http://developer.android.com/guide/appendix/media-formats.html
You know if you stretch your budget out a little you could get a new S3. I would.