As it currently stands, this bug does not look like it meets SRU criterion, which is documented here: https://wiki.ubuntu.com/StableReleaseUpdates

Additional justification and consideration is needed for this bug.  As well, a major concern is the 'use of a new mp3 encoder', which can introduce a huge regression potential.

I am marking this "Incomplete" for now until further justification, consideration, and testing have been done.