On of the major problems of using Apple lossless files or WAVE files is their substantially larger size compared to MP3 or smaller AAC files. While encoding music to an iPod it may be common to run out of space on the internal hard drive of a the computer. Sometimes buying a bigger hard drive isn’t possible. When this occurs one option would be to change iTunes preferences so that music could be deleted off of the computer’s hard drive without being removed from the iPod. This would be a fine solution for music that the user would never want to remove from the iPod. However, if the user ever needs these music files again having to re-encode them every time they are needed would be a painful process. Apple could easily allow music to be moved back from the iPod to iTunes. This would naturally make record company executives concerned with music piracy less interested in licensing their content to the iTunes store. Therefore Apple has been forced to disabled this ability. There are a number of third party products that will allow the user to copy files from their iPods back into iTunes. EphPod is one such product, and it happens to be free.