Applications: Rollback latest update I updated Winamp today from the market and now I'm having troubles playing shoutcast stations and some mp3's. Is it possible to rollback only the update I installed this morning? or am I out of luck?
no, you are pretty much out of luck. Once you update, you have that version and cannot go back. 

I do not know your android knowledge, but, if you have the apk file for a previous version, you can "sideload" the application on to the device (unless you have at&amp;t). But that is a bit more complicated if you never done it before. It requires the drivers for your PC, copy the file to the sdcard, and then "open" the apk file with an file manager, which will then launch the Package Installer.