Move main window to EtApplicationWindow object
Pass the main window to actions as user data
Move log area to EtLogArea object
Move playlist window to EtPlaylistDialog object
Move load filenames dialog to EtLoadFilesDialog
Move file search dialog to EtSearchDialog object
Move preferences dialog to EtPreferencesDialog
Move CDDB dialog to EtCDDBDialog object
Move scan dialog to EtScanDialog object
Replace strncat() with g_string_append()
Move select and unselect actions to main window
Move file selection actions to EtApplicationWindow
Set a rough initial window size and pane positions
Add AppData XML using APPDATA_XML macro
Remove a bogus GtkTreeIter assignment

Found with Coverity (CID 1163324).
Add a comment about id3_file_fdopen()

Passing a file descriptor to id3_file_fdopen() causes it to take
ownership of the descriptor, so that only a matching id3_file_close() is
required to close the resulting file.

Found with Coverity.
Remove bogus conditional check

Found with Coverity (CID 1163350).
Remove a bogus sign check

Found with Coverity (CID 1163351).
Remove bogus conditional check in settings parser

Found with Coverity (CID 1163352).
Replace use of stat() in Get_File_Size()

Use g_file_info_get_size() and check for errors, instead of calling
stat(). Rename Get_File_Size() to et_get_file_size().