'Ferreting' is featured during the closing credits of the show every week - or so I understand, I haven't seen the show myself - and it is quite addictive.
The album is called 'Songs for Survival' and it has been digitally released on iTunes and Play.com; on Monday October 13 the CD will be released to stores in the UK, including HMV, Zawi and Fopp. You can also order it from Amazon.
There are only two more episodes of 'Amazon' so be sure to check it out if you live in the UK. And download 'Ferreting,' you won't regret it!