i have changed the *.vbo file to a *.mpg file, by renaming it. when i play the new file in windows media, there is no sound. have made the usual checks and everything appears ok....so where is the audio !?
I assume you mean .VRO file. Simply by renaming it as an .MPG doesn't make it a legal MPEG file - the VRO is a container file with other information which means it can't be read properly by just changing the name. You need to demux the files into .m2v and .ac3 streams in a programme like TMPG Enc Author. Of course compatible programmes (such as WinDVD 4+) can play VRO files directly without renaming at all.
YES that works !!!. but........
I have not loaded the files to a DVD disc, but to an ordinary CD ( the files total =550mb). Interestingly, what is happening is that the created menu is shown for an instant and is is immeditely followed by the video. Do you think this problem has been created by me via way i created the menu in tmpg, or is it that i used a CD disc and not a DVD disc ?
It must be the CD then. May I suggest you have a look at these forums: http://forum.digital-digest.com/
They are probably the internet's leading resource for video editting and somebody there will be able to offer further advice. There might be someway to author onto a CD with working menus - I haven't been down that route so can't really help.