Radio interview on the occasion of the Lucrezia Borgia in Dortmund, June-2010. Direct link to the MP3 file
 
The German radio station WDR3 broadcast an interview on 10-Apr-2010. You can hear an excerpt here. Direct link to excerpt
 
You can watch ZDF's report about the 40th Vienna stage anniversary here.
 
Listen to (or download) a radio interview made in Munich in 2010 by the Bavarian Radio. Direct link to the downloadable file
 
Listen to (or download) a radio interview made in Bratislava in November 2009. In Slovak. Includes music excerpts. Direct link to the MP3 file
 
In Jan-2010, Norwegian Radio (stations NRK Klassisk and NRK P2) broadcast the 21-Jun-2009 recital from Barcelona, with several repeats.
This Kammertjenerne programme has an archive, too, from which you can play the broadcast.
 
Gruberova interview (about Lucrezia Borgia) available on the website of the Bavarian State Opera. (Podcast)
 
Gruberova interview (other, also about Lucrezia Borgia) available on the website of the Bavarian Radio. For direct download, select one from the following versions: MP3, smaller file MP3, larger file WMA, smaller file WMA, larger file (right-click for download)
 
The 25-May-08 concert in Prague has already been broadcast on the Czech station "Vltava".
The concert is expected to be broadcast by other radio stations affiliated with the European Broadcasting Union.
 
Listen to (or download) a radio interview made in Barcelona in February 2008. (In Catalan, but the original German can mostly be heard as well.) The interview was originally broadcast on 13-Apr-08 on Catalunya Música, within the framework of the programme "Una tarda a l’Òpera". More info
 
Listen to (or download) a radio interview made in Basel after the 7-Mar-08 recital.
 
The 16-Nov-2007 "Norma" was broadcast live, from Vienna.
It is likely that other stations will re-broadcast the concert. Check your local classical stations.