Yes with that much memory, I would keep the page file, but move it off the SSD to prolong its life (or so they say).
As for JRiver, where does it store its cache and how large does it get?
MediaBrowser for example appears to "cache" (read copy) all coverart and fanart in its folder. I keep the main ones on the SSD, but actor photos and others like that I move off the SSD onto a HDD using JunctionPoints.