If you are using another monitor to expand your desktop, you cannot leave Winamp on the secondary monitor before detaching the secondary monitor.
If you have already detached the secondary monitor and you cannot move Winamp back to your primary display, you have to edit the Bento skin configuration (typically located at C:\%APPDATA%\Winamp\studio.xnf
).
Open studio.xnf
in Notepad and find these lines (typically around the 23rd line):
<entry name="Bento_nomax_x" value="????" /> <entry name="Bento_nomax_y" value="????" />
Replace those lines with the following (this will reset the window position to the top-left corner of your primary display):
<entry name="Bento_nomax_x" value="0" /> <entry name="Bento_nomax_y" value="0" />
Save the file, and open Winamp.