Add songs from internet

If you mean by downloading straight from the internet from your phone, there is an application called Amazon MP3 that allows you to purchase songs for your G1 and add them to your memory card. You have to be connected to WiFi to be able to do this though. If you want to connect it to your PC to get songs you downloaded from the internet you need the USB cable that came with the phone and connect it to your PC. On the G1 a notification will appear that says USB connected. Just open your notifications, tap on USB connected and select mount. Then your PC will detect it and allow you to view the files on the memory card. Then just copy and paste to your memory card folder.