The final version XoloX was released 2 years ago. There was a XoloX forum section here but since the program has been discontinued, so has the forum. It can only be accessed certain ways & there'd be no point in accessing it since XoloX support people are no longer around. Perhaps a member of the forum knows something about using XoloX but ... I'd recommend using an actively developed client instead. There's plenty around. LimeWire, FrostWire, Phex, BearShare, Morpheus, Shareaza, etc. Check the forum sections & you'll see which ones are supported here.
What's wrong with the old Xolox?
XoloX wiki is one reason. There's more I'm sure but I never used the program. Another member might be able to tell you the plusses & minuses about that program.