Lightsquid not recording Spotify traffic

[just_a_user]

Hello.
On my pfsense (2.0.3) box I have Squid setup transparently with Lightsquid for reporting.
When looking through Lightsquid Reports, I noticed the only traffic that is reported for Spotify is "upgrade.spotify.com", otherwise I see nothing else from Spotify, and it gets used a lot.
Does anyone have an explanation for this, and possibly know a way to get Spotify traffic to be recorded?

Thanks.

[jimp]

A transparent squid proxy would only catch HTTP traffic, nothing else. It could be using HTTPS, or a port that isn't HTTP at all inside the client.

Isolate a machine running spotify and check the state table and/or packet captures of that system's traffic, see what it is and where it's going.