but it's weird?!?
How big are the new .dat and .idx (music and events) generated by the game? It should be quite large due to the music, given the new content... did you put the new music into the "music" folder of BC? all tracks must go there, once done, deleting the aforementioned files to be restored, and using the .txt file (attachments) to let the engine read the new music...
Here, as well, a guide-tutorial related to music packs:
http://www.twcenter.net/forums/showt...-Music-To-M2TW
EDIT:
To be precise, the new generated "music.dat" has to be close to 800.000KB (around 796.000KB), the new "events.dat" more than 7000KB (around 7100KB)... And, the first song that you hear in the main menu must be "Pacem Domine", it's a Gregorian Chorus for the Crusaders (just re-controlled right now on my PC).
In any case, if you have problems try to use as well the older descr_sounds_music provided in the Dropbox download (instead of the one in the attachments)...