Sorry for bumping an old thread, but I found a solution. I looked around the web for a sound alias file, looked through the BO3 game files for the Widow's Wine sound files and looked online for the sound files. I didn't find a solution.
I managed to get the Widow's Wine jingle working by downloading a YouTube video of the Widow's Wine theme song, opening it in audacity and exporting it as a 48KHz .wav with the file name "mus_widows_jingle".
To get the sting working, I edited the file I made previously and cropped it down to the very end, then exported it (once again as a 48KHz .wav) with the file name "mus_widows_sting".
I then added these files to my "Call of Duty Black Ops III\sound_assets\zombie\perks\mus" directory and appended my "Call of Duty Black Ops III\share\raw\sound\aliases\user_aliases.csv" with the following lines: