Ok, in addition to the FAQ I would like to add this.
Your songs get grey when you try to play them and the FAQ doesnt help, then this could also be the case:
Most likely:
1. The files have been moved with another application (e.g. explorer)
Solution 1: (Gold Feature)
1. Goto the node "Files to Edit->Dead Lnks"
2. Wait until MM has scanned through all tracks
3. Highlight all tracks
4. Goto "File->Locate Moved/Missing tracks"
5. Follow the instructions
This will keep your Playhistory, Playcount, Date Added and Playlists intact.
Solution 2: (All versions)
1. Goto the node "Files to Edit->Dead Lnks"
2. Wait until MM has scanned through all tracks
3. Highlight all tracks and delete them (The files aren't deleted from your HD)
4. Rescan your folders where your music is located.
This will forever delete your Playhistory, Playcount, Date Added and Playlists entries for these tracks!
Happens sometimes:
2. The file is corrupt
Solution:
- If the file is mp3. You could try to change input plugin to e.g. MAD
http://www.mediamonkey.com/input-plugins.htm
- Google for some mp3-repair program and try to repair the file(s)
Almost never:
3. The input plugin which is used to play the file type has been uninstalled
Solution:
- Install the plugin again