Re: Google Play - download songs twice only, really?
I'm not sure, but I think it's all in an effort to make it harder to distribute music freely (i.e., pirating). So if there were no download limit, what would stop people from ripping music from a CD, uploading it, then downloading it many times to many different devices for many different people?
Keep in mind that if you download it once to your computer, you can then keep it in a safe place, and then copy it to another computer if you need to. So Google isn't completely preventing you from distributing your music--they're just making it a little more inconvenient, so that the behavior doesn't run rampant. This is just my opinion.