I am having the same problem. The ringtones are on the memory card and I see them on my computer but when I open ringtones on my phone I don't see any of the ringtones I added.
Did you click Browse and then find them on the memory card then add?
I added the through windows. I opened the blackberry 2 / ringtone folder and dropped them in there. As far as clicking browse and adding them I dont know what youre talking about.
I had the same problem with some songs I put on the card. They would show up on the device but could not see them when the device was connected to my laptop. I'm pretty sure it has to do with enabling mass storage mode.
As far as the browse, I just open my music folder and drag them onto the device.
I seem to be having the same issue with .85. I copy ringtones to my ringtone folder on my memory card, but when I open the media app and open ringtones, they do not show up. When I "explore" with the media app I can see them in the ringtone folder and set as a ringtone from there. Might just be a bug with .85. I can see the ringtones I copied over when I was on .75.
For some reason, my phone keeps making duplicate entries for all my custom ringtones in the sound profiles. I would see "Custom Alert 1" like 5 times...this is very annoying.