The Bardic Circle Podcast has been discontinued. The podcast, which was running from 2006 through 2011 was updated infrequently with (usually poor) recordings of whatever we happened to be working on at the time. The podcast was listed in iTunes, which might be how you found out about it since it may take some time for it to become delisted from that site.
The Bardic Circle website went away: http://bardiccircle.info
Podcast from Imbolc, 2010