Yes Crucial is smaller and much more difficult to get through their review system. Also Crucial reviews one track at a time. Each track has a separate 12 page contract.

Pump Audio,/Getty Images is another large library. However it takes 1-2 years to get new tracks approved and in their play engine. I still have three CD's of tracks I sent them over a year ago. They're approved, by not in their system as yet.

Yep, Audio Sparx is huge. Not sure about them devaluing music anymore than other libraries. You do have the option to set your own price.

Best, John smile