Rejuvenation by producer Loop Theory is a set of seven construction kits for producing Chill Out and Downtempo music. This set of 119 loops includes pianos, basses, keyboards, SFX, pads, synthesizers, kicks, snares, high hats, snares, and percussion. Tempo and key information are in the file names as well as in the each file's metadata.
Formats (24-bit 44.1kHz Stereo):
Price: $24.95 from the Soundtrack Loops website here.