I think you'll have to remove both the BB Manager s/w inc. media manager, then reinstall your original roxio suite. Then when reinstalling the desktop manager software click custom install and deselect the media manager option. This should leave the original roxio in place.
Not sure what support you'll have in the original Roxio s/w to sync' with the bb, but the media manager is really bad anyway. Very slow, doesn't auto sync and offers nothing more than WMP. you could even use windows explorer!
Roxio can't even cope with resizing ther app' to fit on my PC screen (1024x600) -which is quite small,..... but come on guys!!