Sonic Stage - Jumbled Audio Files

I am running Sonic Stage 4.3 on a Sony Vaio PC. I had created a bunch of "playlists" of copied cds; they are now all jumbled together (tracks repeated in all "albums"/"playlists", seemingly duplicate tracks, etc.)

Does anyone know how to "unjumble" and correctly arrange the tracks back to their proper albums? (Note that the tracks are still in their proper album/playlist subfolders on the D: drive, but just show up incorrectly in the "Playlist"/"Album" listings within Sonic Stage.)

I have already tried deleting all tracks and importing from the subfolders using Sonic Stage's built-in utility - no difference.

Also, what's the best way to import/convert these ".omg" files to another program/extension/file type? (I can open the individual files/tracks in Windows Media Player and play them, but cannot save them in MediaPlayer playlists or convert them from their "open wave" file format)?

Lastly, can someone recommend a better program for organizing these audio files and burning cds?

Thanks!