You cannot submit multiple albums combined into one album*. Some labels try to do this to gain marketing presence and visibility by increasing the number and volume of their songs in the music stores. This is not allowed, since duplicate sound recordings can create conflicts in many of the music stores.
*Historically, prior to the advent of digital music, this was a common practice when duplicating physical media (Compact Discs, etc). However, this is no longer considered good practice and we will not distribute content of this type.