If you are really so concerned about this issue there are three ways I can think of to possibly help masking this:
- Use a proxy server
- Artificially limit your bandwidth (stream in realtime compared to the episode duration) - Not what u are looking for, huh?
- Reconnect from your ISP after each successful download of an episode
(If you have a dynamic IP address you could write a batch script that
automatically reconnects you from your ISP to give you a new IP address.)