So now, I'm revisiting this same problem.  Apparently, it isn't Riivolution interfering.  I just added a few more songs and now it half works.

Originally, I changed the Airship song in Luigi's Mansion (now Dracula's Castle) for Wicked Six (from Sixto Sounds of OCRemix.org) and Theme of Tara in Shadow Moses for Heavens Divide (from MGS Peace Walker) and those two worked fine in Gecko.  After that, the info_training.pac file wouldn't cooperate for the new songs I added.  Quite frankly, I'm at a with what to do.

EDIT:

Never mind....  I found the problem.... 

Yup.  Those two (info.pac & mu_menumain.pac) are definitely the ones I've changed.  I know I read somewhere that the two originally have *_en in the end and in order for it to work, you gotta erase that part.

On another note: I tried running my mods in Gecko (as opposed to Riivolution) and the changes worked.  I have a feeling it's something to do with Riivolution interfering with some kind of coding or files need to be moved in the right places.

not familiar with title moddign in project M's  mod, but mu_menumain_en and info.pac's contain message data, inside this are the song titles and some menu descriptions

Those were the two that I "fixed" and apparently it doesn't work.  D:

Hey, Vyse!

Thanks for an awesome tutorial.  But, cuz me being a newbie and all at this modding business, I have stumbled upon something that makes me wanna pull my hair out.

So, here's the deal:

I successfully added/replaced a new song to a stage and changed the name of the song, BUT only in the menu with the sliders that controls how often the song pops up whenever you play in that stage.  When I go and select the stage, the new song is playing, but the text on the top left corner still retains the title of the original song.  How do I change it to the title of the new song?

I'm currently running Project M on Riivolution.
The mod version is 2.5.1