Aha!
I had this problem last year when I got a new RAZR and then realized it cant play music!
Ok, so
1) Does your phone have a Mini SD card slot?
2) If you are doing this with a USB cord...stop reading now,cause I have no idea how to do that.
Ok this is a long process.....
3)Put all of the songs you want on a playlist and then burn to disc.
4)Put the disc back in (DO NOT IMPORT TO ITUNES)and put the songs on a mini sd card
There may be a better way to do this other than putting it on disc, but I have not found that way!
As far as I know, this is not illegal, but I may be wrong....