This issue has not been fixed at all !! The split second noise between each song is still very much there !! This is just incredible !!!
It actually seems to be not a app issue, as I originally thought, but an incompatibility between 8.1 and the digital device in
many (even
most) Windows Phone apps.
Which, on one hand, means that perhaps Xbox Music
doesn't have another problem, which is good. It simultaneously means that the Windows Phone team
really dropped the ball, to the point where the ball shattered into a thousand pieces, by releasing an update that bugs audio playback across multiple apps.
Basically, it seems to be...
Windows Phone 8.0 = No reports of this problem whatsoever (can you imagine trying to cell a smart phone with a cracking sound between every song you play?)
Windows Phone 8.1 = Problem effects many, if not most, handsets that are updated.
It may not be an Xbox Music problem. It may be much worse.