RealAudio filtering product?

[patrick.mueller () ac com]

Does anyone know of an internet filtering product (a.k.a Secure
 Computing's "Secure Control", "SurfWatch@Work") that works on RealAudio and
other streaming media
 protocols? Related experiences with such products would also be appreciated.
Thanks in advance.. (Please cc: or bcc: me on the reply. Thanks!)

   -- Patrick