You can customize your Treo smartphone so that pressing and holding the Side button on the side of your smartphone opens RealPlayer. See “Reassigning buttons” on page 190 for details.
To view details for the song that is currently playing, open the Music menu and select Song Details.
7.Drag the song files you want from the My Library window on the left into the palmOne device window on the right.
8.Be sure your smartphone is on and that RealPlayer is open. If it is, a green Connected light appears in the
9.Click Start Transfer. When the transfer is complete, the tracks you selected should say “On Device.”
Listening to music on your smartphone
1.Go to Applications 
and select RealPlayer 
.
2.Do any of the following:
•To play (or pause) the current song, press Center 
or the Side button.
•To play the next song, press Right 
.
•To play the previous song, press Left 
.
•To play a different song, use the stylus to select Songs and select a song from the list.
•To select random or continuous playback, use the stylus to select the onscreen controls.
•To adjust the volume during playback, press the Volume button.