Hi I bought a nexus 7, which the speaker doesnt go so i need to take back for replacement. Can some one tell me how I can copy files eg apps from the nexus i have now, to my win 7, and store untill I get my new one. And then I would have to copy them back to the new ones. Reason I dont download again is i have many gb worth and will use up my download limit. Can you please tell me what files i need to copy, or if i need a certail program. Thank you in advance and excuse my english!