HDD refers to Hard Disk Drive.

Some videos in searches may have HD or HDD beside them referring to High Definition, which of course after shrinking means they might not be high definition any longer, depends on particular file.

Playlists files are simply a document type of file which lists the names of songs, etc. with pointers to tell the player where to find them. The actual Playlist file itself does not contain music.

Thank you, LOTR. I understand now that my "My Music" file just lists the names of songs. However, all my titles show up in the LW library, and also in the Media Player library. I also have them on a CD. For some reason, I don't have a "Shared" file in my Name/My Documents folder. I have searched for a couple of the song titles but nothing turned up.

I was able to play 30 + - seconds of a song in Media Player, and they played while I was uploading them to Media Player. Now, I can't hear anything. MP also uses "Playlists," but I believe that's just for grouping songs, though I might be wrong.

If the document file that lists the songs has pointers to direct the player where to find the actual music, where are they pointing? Is there any way to find out?

NOTE: I have achieved sound on MP, and want to thank you guys for helping. I learned some things from this thread.