.Map :: MoHAA Mapping

I have added custom sounds to my map and they work fine if the ubersound folder is in main. However, when I place the ubersound folder in a pk3, the custom sounds do not play unless I remove all the non-original pk3s. Other than renaming my pk3 "ZZZZZZZuser....", is there a way to get my custom sounds into the game? Can I make a "dm-Egypt_ubesound.scr" and load the script with my main script?

Here is an example of one of my custom sounds:

aliascache boat_snd_idle sound/vehicle/veh_jeep_idle.wav soundparms 1.5 0.0 1.0 0.0 800 8000 auto loaded maps "m dm moh obj dm-Egypt"

Well I wished there was a way but I don't think so. I've tried out a few things but nothing worked yet. Anyway, if you find out something, please let me know because I despise .pk3 files overwriting original files, and worst of all, my own map does it too .