It's in the tmp directory for a reason, I'm hoping that a better solution will come along, I would consider this to be a dirty solution at best.
It also has something do with the db.xml file. I tried to add the entry for the proposed directory name, it's working, however, it somehow hide some of the default ones. I'm not so sure what's the reason, probably not understanding what's scode means.
Also, in the same token, one could add other web address in the same way as proposed, it's not hard at all.
<slot dir="63431946571433990" file="NSXWSV-PN.P3.CA-WHATSNEW00000001.xml" last="Thu, 03 Feb 2011 18:12:11 GMT" recv="63432457399377695" scode="304" sdate="63432457399922452" url="https://nsx.sec.np.dl.playstation.net/nsx/sec/Xz78TMQ1Uf31VCYr/c/NSXWSV/NSXWSV-PN.P3.CA-WHATSNEW00000001.xml" />
Maybe someone knowledgeable could create a program to auto insert to this tmp location.