Tech Spec? - Sound compatability Problems

Sorry all ........ I posted this last week but nobody answered my query .......... could someone help with some SIMPLE TECH SPEC?
When playing back any of the work which we produce in iDVD in a Home Cinema 5.1 type environment, there are soundtrack incompatibility issues and the result is DVD's made in iDVD playback clicking,spitting & at the wrong pitch!
Having done a little research with the very helpful Dolby consultants in England, I found that the audio formatt a "standard" commerciallly available movie encoded in 5.1 uses is 16 bit 48 khz ......... however, having scoured the iDVD website, I can't find definitive Audio Spec for the vob files that iDVD resolves in it's final masters. To confirm my suspicions that for some reason Mac chose to use a different standard of their own, CAN ANYONE POINT ME TO SOME DEFINITIVE AUDIO TECHNICAL SPEC?
Many thanks Richard

Hi Len
Many thanks for your input. Unfortuanately my question wasn't what "iDVD likes" .................... I'm having great trouble finding an answer to - WHAT IT MAKES ?
I'm a movie composer and have started using iDVD to compile showreels of clips from movies that I've scored. So my "source" is actually a series of Quicktime PAL DV movies which have been exported from original masters. The Quicktime files that I drop into iDVD all contain stereo 16 bit 48 khz soundtracks.
When you play any of my iDVD compiled showreels on a standard stereo DVD player (or even in the Macs own DVD player), they play absolutely fine.
HERE'S WHERE THE PROBLEM BECOMES A BIG ISSUE:
A lot of production companies have 5.1 "Home Cinema" type playback systems in their offices, and I've found that when they play iDVD derived stuff back through the 5.1, the resulting soundtrack (ie. my years of hard labour!) is horrid.
I simply wonder what the DVD's we burn from within iDVD resolve as a sound format when they make the VOB files - because they use a differnent format to the one used by the companies that manufacture commercial DVD's for the worlds motion picture industry? ie. What is the Sample/Bit Rate of iDVD produced DVD's
Many thanks Richard

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Tech Spec? - Sound compatability Problems

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