It definitely works just fine.
Both from Audio_TS folders, and from a DVD-A authored ISO or IMG file as well.
@ the original poster - what authoring app are you using please?
How are you creating your DVD-A?
Only thing I have issues with is the layer break as the DVD-A is mastered in PTP mode usually.
This is just a set of files I downloaded from the newsgroups. So I have no idea - however, I did use a DVD+R, so I will try it on a DVD-R and see if that fixes it.