Real audio problem

All,

Since I have installed Squid as my http proxy, I have noticed that I am
not able to stream real audio or video from many sites. Streamed MP3
data such as from www.mp3.com works fine though. The error I receive
is:

"Connection to the server has been lost, you may be experiencing network
problems."

This typically comes AFTER RealPlayer has begun to buffer the data, and
more typically after it has begun to try and stream the buffered data.

Has anyone had any experience with this? Is there a directive I can
specify in squid.conf to fix this. My transports in RealPlayer are set
to "Use http only."

Thanks!