MPVolumeView Disassociated with device volume

[admin]

We have an App in development that uses audioplayer and audiorecorder along with audio queue object, in order to record, and play back audio synchronously. We play a track while recording is taking place. On the view where recording takes place, we have an MPVolume View. Everything works great on iPhone. However, when recording on iPod touch, with headset w/ mic, the MPVolumeView will not change the device volume. The side buttons on the device will control the volume while recording, but they do not change the MPVolumeView slider, like they do when audio is simply playing. On iPhone, the audio gets routed out of the earpiece and the slider does control this volume, but for some reason it gets disassociated with the headphone volume on iPod. It actually did work a couple times, but it's not consistent, and almost always does not control out put volume while recording.