two different recordings from the Primavera festival are available on Dime:
Sonic Youth - 2007-06-02 - Barcelona, Spain - dpa4061>PCM-M1
by tris1979
and
SONIC YOUTH - 2007-06-02 - Barcelona (Spain), Forum [AUD | Primavera Sound 6/7]
by MachlaD
MachlaD source I think is avaialble in mp3 somewhere on the Live Recordings thread on this board (Tris doesn't want his recordings to be shared in lossy formats).
Some of the non-DDN shows were taped too, but you're probably not interested in those ;-)
edit:
there's also a whole lot of vids on youtube in varying qualities. There's some thread on this board oon that somewhere