hi there!unfortunately little is known about unreleased tracks of TCR.
Besides the iTunes exclusive "Runaway" there are two more tracks you should look foreward to DL:
In early 2008 (2x.01.) paul gave a radio interview where he played some acoustic tracks for being:
TAKE LOVE and WARBOYS...and three of his previous career's tunes...
it's really worth listening although the most common circulating version is a 22khz mp3 (correct me if i'm wrong, dudes :-D)
according to Bri take love didn't make it on the record because they didn't like the result of the studio recording. shame they never officially released a live track (but we sure DO get GH IV, don't we ?)...
to my knowledge furthermore there is a demo-version of SINT of which 5 seconds could be heard on the 46664-page some time ago (probably recorded in 2003)... for what it's worth.
would be interesting if anyone had more info...