1). My New UI, with only a few bitmap replacments, I just compiled with tool (build-cache-file) and when i opened halo none of the menus or music or anything 'UI' just the bsp of the halo ring.

2). Also I failed to find the bitmaps for the HAlo Logo.

3). How do you add custom music? or in this case several songs like the h2 Ui.

1) Change the map type to "main menu".

2) ui\shell\main_menu (I think. This is off the top of my head.) They won't be compiled anyway unless you use the modified bitmaps.map from Halomaps.

3) Either edit the title4 sound looping tag, or use a script to direct another one.

its already on main menu, it's not there, and where can i find the modified bitmap and how do i use it?

The modified bitmaps.map is on halomaps. Search "bitmaps.map".

tags\sound\music\title4\title4.sound_looping.

when attempting to open halo_logo.bitmap i get

file_read('tags\ui\shell\main_menu\halo_logo.bitmap') error 0x00000026 'Reached the end of the file. '
couldn't read #262144 bytes from offset #172 in local tag 'tags\ui\shell\main_menu\halo_logo.bitmap'
file_read('tags\ui\shell\main_menu\halo_logo.bitmap') error 0x00000026 'Reached the end of the file. '
couldn't read #64 bytes from offset #262316 in local tag 'tags\ui\shell\main_menu\halo_logo.bitmap'
couldn't read elements for bitmap_group_sequence_block block
file_read('tags\ui\shell\main_menu\halo_logo.bitmap') error 0x00000026 'Reached the end of the file. '
couldn't read #48 bytes from offset #262316 in local tag 'tags\ui\shell\main_menu\halo_logo.bitmap'
couldn't read elements for bitmap_data_block block
failed to load bitmap tag 'ui\shell\main_menu\halo_logo'
couldn't open tag

and korman 00 won't let me modify file paths for ui tags.