Well Winamp's latest beta release 'Winamp Remote' does that. So now you can turn your home computer into a streaming music server for your cell phone. Winamp Remote on

Now, change your music with your mood. Well if you are thinking about the playback quality, then heres' the reply: Winamp Remote on Mobile automatically streams content to your mobile device's browser at the appropriate bitrate for your data connection and format.
That means you'll receive a optimized playback experience so you can:
- Access your home music on your mobile phone 24/7
- Stream your favorite tunes from Winamp
- Manage your mobile music experience with ratings & playlists
So how do i do this ? Follow below instruction.
a. Go to http://www.winamp.com and download the Winamp media player.
b. Select Winamp Remote in Winamp & download the Winamp Remote client, create a Winamp Remote account, add some playlists & rate your music.
c. Open your mobile web browser & go to http://winamp.orb.com.
If you have any questions then raise it here.
So where every you go, all your music goes too!