Digital Downloads:
ListeningLounge (mp3 320kbps)
iTunes (AAC 256kbps)
Amazon.com (mp3 256 kbps)
HDTracks.com (FLAC 24/88.2kHz) – May 8th?

CD:
SSRI mailorder
Amazon.com (May 15th)
+ your local CD store and most national chains (May 15th)