I want to know if DVD architect can have multiple layers of DVD Audio sets. For example WAVELAB 5.0 supports DVD authoring with 9 layers of DVD audio sets. Each Audio set may contain a maximum of 99 audio files.
Although DVDA does impliment a VMG it does in fact only support a single VTS (99 "tracks"). If you can't get WAVELab to handle A/V DVD authoring (?) then you can instead run this work through DVDLab or DVDLabPro-beta (mediachance.com).
At some point in the DVDLabPro-beta you'll be able to better import the VTS from DVDA in a multi-VTS fashion. Currently the Sony VMG gets in the way, AFAIK. (tried it a while back to create a compilation DVD of my periodical demos)
Sony might go multi-VTS at some point. Having a VMG would appear to have been chosen for better player compatibility.