Recorded and transmitted by Radio France Musique it is still available on their site. Normally available for 7 days it is always difficult to say if that will be the case - so catch it while you can.To Listen On-demand Click Here:
Conductor ..... Mikko Franck
Tristan ..... Christian Franz
Isolde ..... Nina Stemme
King Marke ..... Peter Rose
Kurwenal ..... Detlef Roth
Brangäne ..... Sarah Connolly
Melot ..... Richard Berkeley-Steele
A young sailor ..... Pascal Bourgeois
A shepherd ..... Christophe Poncet
A steersman ...... Renaud Derrien
Choeur de Radio France (Brigitte Clair & Matthias Brauer)
Orchestre Philharmonique de Radio France (OPRF)
Source:
http://www.the-wagnerian.com/2012/10/listen-on-demand-tristan-stemme-franz.html