Next commit will include some cleanups, and I'll probably also remove the dynamic-tunning and related support code (not a lot of code though, but.. it's currently unused). I'm also considering completely removing the old stretcher from the code, such that both dynamic-tunning and the old stretcher will only live in SVN history.
Meanwhile, you can test this patch and report back here if you notice a difference. BTW, on my system I use the portaudio output since IIRC it offers the lowest latency.
As before, to display stretcher messages at the console, enable underrun/overrun messages at the SPU2X debug UI (which is also available on normal builds).
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5729 96395faa-99c1-11dd-bbfe-3dabce05a288