That warning about not finding files is what I want to get rid off, at least it could stay for some time and then disappears.
I use the browser playlist all the time in shuffle order and when foobar2000 found something in a cue it didn't find comes that mesage. How to disable it and keep the music going without that text warning.
*Using foobar2000-0.9.5.4 beta 2

Stop deleting, move or renaming files/folders with windows explorer if they are inside the folder that you set as your musiclibraryfolder. Foobar won't know that you did and gives this message if it cannot find a song.

To remove the textmessage you need to rescan your medialibrary or do a "Remove dead entries"-scan. (rightclick the All-node in albumlist and choose remove dead entries).

Keep your foobardatabase up to date by doing all fileoperations concerning your musicfiles with foobar. (that's optional at foobarinstall and available under rightmousebutton).

You can disable the messages under Preferences -> Advanced -> Playback -> Show error messages popups.

@Mar2zz: There are other scenarios, where your suggestions don't help. For example: I'm carrying fb2k on an external drive with just a part of my music collection. It would be very annoying for me to see this popup dialog everytime I try to play a temporary not existing file.

Thanks! this is what I was looking for. I am always doing "Remove Dead Itens" from the Edit Menu, I do not have much space in my HD, so I am always deleting files or moving them to another HD. And the problem with cue shits that didn't find the song. I'm going to put exclude "*.cue", "*.m3u" and "*.pls" from scans in my Media Library. maybe this will resolve the problem in another way, now seeing more closely the problem.

Didn't know that option was for those messages too. Thanx for the tip, fbuser!

I think that knowing what music you have and don't have is more important, so that error message is a good warning something is not ok. I would never disable it.

If i was working with a part of my collection on a external drive like fbuser I would create a facet that loads only the collection that is on the external, keeping the full database intact and no error messages appear.
Maybe even an albumlist filter is possible for that, but I use facets more so I wouldn't know how to do that.