One of my less frequent sources for retro MP3s is About.com's 80s Music site. It's less frequent because I find it tends to be updated in fits and starts, and their lists of links to other MP3 sites needs to be updated.
But anyway, it was through them that I learned that there are several live Squeeze tracks available for download on MP3.com, including a few of my favourite songs from them, "Pulling Mussels from the Shell", "Another Nail in My Heart", and "Tempted". Enjoy.