reset preferences

[foice]

hi to all,
i was really sick of iTunes lacking a watch folder feature, thus, thinking to the beloved amarok, i moved to play.
i added my 70gb mp3 folder through "add whatch folder", but after 30min it was stuck there ... nothing seemed to happes, so i forced play to quit.
now play cannot start anymore, icon bumps for a while in the dock, but the application window never appear. i guess i have to reset all my preferences (something similar happened with VLC and I fixed this way).
SO ... How can I remove all my preferences?
which files have I to delete?
thanks
roberto

[sbooth]

The preferences are in ~/Library/Preferences/org.sbooth.Play.plist. Your library is stored in ~/Library/Application Support/Play/Library.sqlite.