Let me know how this works for you. I just added a follow up post on my blog on A2DP. They have improved it a lot. I no longer have the issue where it would get choppy when using other apps on the phone while the iPod is playing, but there is one that still exist in beta 4.
Originally Posted by jeep14
When I go outside the audio breaks up. It breaks up more jogging vs walking, but still pretty unusable in either case. I have a feeling it has to do with the extra interference outside, maybe they just need to turn up the power? Hopefully they get this fixed before the final release.