Shame you can only store 20gb of your own tunes though.
Posted via Android Central App
Ummm, no
From Google support:
Song storage limits for Google Play Music
You can add up to 20,000 songs (up to 300MB per song) to Google Play Music from your personal music collection using Music Manager. Once you've added your music through Music Manager, you can listen to it through the Google Play Music app and*on your computer.
Music purchased from the Google Play Store doesn't count towards your song limit.
So, technically 20,000 * 300mb = 6000 GB theoretical limit ( I highly doubt Evert track you upload will be 300mb but still, waaaaaaaay more than 20gb.
My original post included a link but I don't have 10 posts yet.
Edit:
If you upload your personal songs, while on Wi-Fi make a playlist and download that playlist to your device. Then, select "downloaded only" on your play music app and voila. If rooted, use play exporter to allow your downloaded music to be visible to HTC music player.