please can anyone tell me how to send music from my files on pc to my mobile phone (sony ericsson 750i) my computer knows my device is coneccted but i dont know how to do it
thanks

I don't know but I did find this extensive guide that might help you:

http://www.mobile-review.com/review/...-k750-en.shtml

Player. The phone has built-in mp3 file player, as well as 3GP, mpeg4. The player is actually a nice tool for listening to mp3 files. Equalizer setup is present among the other settings (Bass, Voice, Tremble etc), as well as the ability of creating your own settings. Depending on these settings the sound will actually change, this is noticeable. The presence of a memory card turns the K750 into a fully-functional mp3 player with good quality.