A user has found the bug so I've opened bug 645 for it (P3):
and noted the limitation in the Manual.
> Date: Tue, 07 May 2013 01:11:35 +0100
> From: gale@...
> To: audacity-quality <audacity-quality@...>
> Subject: [Audacity-quality] Play-at-Speed lower limit is 0.1x
> It seems that with 2.0.3 Release, the lower range of Play-at-Speed
> is limited to 0.1x (identical to the 10% lower range of Time Track)
> and not the 0.01x that the slider suggests.
> See http://forum.audacityteam.org/viewtopic.php?f=46&t=72376
> for the report.
> To my ears the Play-at-Speed lower range was too low in 2.0.2,
> so perhaps this is not a regression but a change from one wrong
> behaviour to another.
> So is it a P3 for bugzilla (which means the Manual would have to
> note the lower range is really 0.1x)? Or do we want to make it a
> P2 for RM to consider?