Martin, the FM signal for WFMU was switched with FM signal for this freeform San Fran station KFJC. SO what u were hearing on yr radio at 91.1 today was actually KFJC programming.
THEN if you went to WFMU.org the website was re-directed to KFJC.org's site! To listen to the stream u had to go to KFJC.org to hear WFMU's stream!!
This was NOT Tom's idea of a joke. The 2 stations WFMU and KFJC did this ALL day as a conceptual April Fool's joke.
ALso the DJ's on either station were asked NOT to mention over the air that the streams were switched.