Mobile Phone Offers

I'm lookin for a mobile phone that offers mobile broadband (3G/EDGE) so I can connect to my laptop for surfing the Internet while traveling. I also want it to have a great stereo sound so I can enjoy the music.

Certainly the Nokia N73. It has wonderful speakers with all these cool features stereo (by Nokia called "3D stereo speakers sound") and all the stuff in it and two 3G cam for video calls as well.
Its price is very reasonable and has a maximum speed of 384 kbps in 3G but EDGE is only 236.8 kbps max.
Music publishing is no longer in its interface and the organization of tracks, plus it has a bigger memory card, but nothing related to the speed or speakers.

Sony Ericsson W910i supports EDGE but not 3G - it comes with Bose speakers, I do not think you will find better sound quality than that.