if you want a laptop for music, the best you can buy at the present time is Toshiba Satellite 5100-501.

1.7 GHz mobile pentium 4
the best quality super fine 15 inch lcd anywhere with 32 MB of 4xAGP geforce video (3D games are no problem)
512 RAM
40 G HD
3 USB plus Firewire
SD and Smartmedia slots (the forthcoming KN7000 uses SD cards)
Cardbus
TV output
SPDIF output
Dolby 5.1 output
Bluetooth
Infra Red
Ethernet
V90 modem
DVD and CD re-writer drive 8x24x8x8.
Harmon Kardon speakers with sub-woofer built in.
The latest touchpad technology with multifunction control.

Beware the Extigy, there are many bug reports with Creative. I use Edirol USB soundcard and find it very good quality.