I am running Ubuntu 12.10 on a Mac Mini and have extremely choppy sound when streaming and connected to a bluetooth speaker. Sound is normal otherwise. The video streams fine with no choppiness. CPU and network utilization are high but not maxed out. Any ideas would be appreciated. Note that sound only streams fine, it is only with video that we get chop.
Based on this forum it is likely that some apple hardware interferes with some other apple hardware. Please read and try the solutions presented there to confirm that it is a problem in Ubuntu, and not in the Apple devices.