If you are getting 35KB/s that is as good if not better than most of us get even for music files. A lot of people throttle their upload speed so as to not draw too much on their CPU Maybe that is what is happening to you. When I download music I usually average about 12-15 KB/s but some only download at 3KB/s that's just the way it goes.
If this answer is not helpful post again stating your problem and someone else may be able to help you.