I recently got a new laptop and I was going to wait to get a flash drive with better memory, so I could take all of my iTunes files to my new laptop. However my mom got a bit ahead of herself and started deleting stuff off my laptop, including iTunes. So I was wondering how to get all of my 1137 songs from my old iTunes library to my new one? I found the files on my computer, and I do have a flash drive but its only 512 MB. So I have half of a GB. I had used up almost 7 GB on my ipod, so its going to take a few going back and forth with the flash drive unfortunately.

Does anyone know of a faster way of doing this? and also all the songs on my computer are M4A files, what does this mean? Will they still go onto my iTunes?
Please help, thank you!