Question: how do i download music to my rca mp3 player?
Answer: Turn on your computer. ... 
Open up Windows Media Player. ... 
Click and drag any files from your computer (left pane) to the RCA MP3 (right pane) that you want to add to your RCA MP3 Player.
Wait until the transfer is finished and then disconnect your RCA MP3 Player using the "Remove Hardware Safely" feature.