I ran into this problem before and am running into it again (since I never solved it the first time).
I merged 3 dvd's together each with motion menus of their own. I did this twice and merged the two sets of 3 together so I have 6 together. Then I merged that disk with 3 others and now have 9 merged together.
So here is the problem:
I had made motion menus with audio in TMPGEnc DVD Authoring. The menus, I have been replacing in the DRMP on my merged DVDs with the TMPGEnc menu, but all that happens is that I get a short 3 second busrt of beginning motion or music then it cycles and recycles.
How can I get more time out of the menu and audio?...I would like to get about 30 seconds or more.
PS: all I am doing in DRMP is replacing the block with the menu of the TMPGEnc and nothing else.... Not sure on what else I should be doing.