Hello,
I am sorry if I am reviving an old topic, but the fix for this is to go into your BT settings and uncheck the Phone audio but leave the media audio checked. I had this same problem on my G1 forever and that was the fix.
The crazy thing is that my wife's DX did not have that problem at all, and neither did my DX until I updated with the latest update. Now my audio clips like it did on my G1 if I have both phone and media audio enabled.
I really wish there was a permanent fix for this.