However, there is another feature that you may be completely neglecting. Using Google Play Music Manager for Windows and Mac, you can upload up to 50,000 of your own music tracks to access from any other device.
The app is very easy to use: just install it, open it and sign in with your Google account. Then navigate to the folder where your music is stored — you can specify multiple locations if you have music from multiple sources (such as iTunes and Windows Media Player).
Then just wait for the music to be downloaded and you can access it from any Android/iOS device using the Play Music app or browser when you log into your account.
There are several benefits to doing this: you don’t have to use a cable to manually copy music to your phone from a PC, and since you’re streaming music to your phone, it won’t take up any storage space — although you can save it for offline listening.