[8.285][QUESTION][ANSWERED] Web Filtering Question

How do I debug a problem that shows up when web filtering is enabled?  I had web filtering off, but decided to turn it back on.  I know this worked a long time back, but many things have changed in that time.

Problem -  Sonos Rhapsody client will not update the channel lists.

all that is showing up in the web filter logs is -
2011:12:04-15:15:54 brk httpproxy[9942]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="POST" srcip="192.168.1.243" dstip="66.150.171.142" user="" statuscode="200" cached="0" profile="REF_DefaultHTTPProfile (Default Proxy)" filteraction="REF_DefaultHTTPCFFAction (Default content filter action)" size="2133" request="0xee703710" url="direct.rhapsody.com/.../RhapsodyDirectMetadata" exceptions="av,auth,content,url,mime,cache,fileextension" error=""
2011:12:04-15:16:34 brk httpproxy[9942]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="POST" srcip="192.168.1.243" dstip="66.150.171.142" user="" statuscode="200" cached="0" profile="REF_DefaultHTTPProfile (Default Proxy)" filteraction="REF_DefaultHTTPCFFAction (Default content filter action)" size="169950" request="0xa06fd00" url="direct.rhapsody.com/.../RhapsodyDirectMetadata" exceptions="av,auth,content,url,mime,cache,fileextension" error=""
2011:12:04-15:18:06 brk httpproxy[9942]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="POST" srcip="192.168.1.243" dstip="66.150.171.142" user="" statuscode="200" cached="0" profile="REF_DefaultHTTPProfile (Default Proxy)" filteraction="REF_DefaultHTTPCFFAction (Default content filter action)" size="2133" request="0xa06fa30" url="direct.rhapsody.com/.../RhapsodyDirectMetadata" exceptions="av,auth,content,url,mime,cache,fileextension" error=""
2011:12:04-15:18:47 brk httpproxy[9942]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="POST" srcip="192.168.1.243" dstip="66.150.171.142" user="" statuscode="200" cached="0" profile="REF_DefaultHTTPProfile (Default Proxy)" filteraction="REF_DefaultHTTPCFFAction (Default content filter action)" size="171268" request="0xa0281b8" url="direct.rhapsody.com/.../RhapsodyDirectMetadata" exceptions="av,auth,content,url,ssl,certcheck,certdate,mime,cache,fileextension" error=""

Which is showing the exception placed for that server.

If I disable web filtering then the application works properly.

I am trying to avoid adding a total exclusion for the server.