So, Paul has been very helpful, and with some research and patience,
there seems to be a solution to some playback issues, at least for my setup.
Background:
I have Subsonic (SS) 4.6 installed on a QNAP 419P+ II NAS, which runs embedded linux on a Marvell ARM processor,
so SS had to be compiled and installed via their QPKG system.
The 4.6 version doesn't play well with Paul's transcoder config.
In fact, it stops working with the mod placed, so I wasn't using it.
During normal listening, I experienced sped up/slowed playback or sound that stops though the counter continues.
According to the changelog, 4.6 "Simplified and improved (the) transcoding framework" over 4.5.
Research on the QNAP forums
suggested a fix from the person who compiled the QPKG- go back to 4.5. So I did.
It works with Paul's transcoder line, and short-term testing looks good.
I'll be back to my office until Monday, so more news then.
-G