[Help] Official WOTC Dragon Talk Podcast 2008-2012

Maybe my Google-Fu is a little off, but I cannot find links to download the official Wizards of the Coast podcast episodes for Dragon Talk between 2008 and 2012.

In particular I’m looking for those covering the period when D&D 4e was in print.

There seems to be a significant lack of archived material from WotCs site from that time period.

Could anyone help? Hopefully someone archived them.

Thanks!