Garageband '11 has spontaneously muted all my tracks.

Try this, go to track in menu bar click "show track lock".

This will lock all tracks (green)

Then highlight all tracks (Pink)

Go to menu bar Track and click show track and this should unlock all tracks. You can do this by single track as well.

I hope I understood your question and this helps.

AntoinePancakes wrote:

I've already saved and closed the song, so I can't un-delete the track

you don't have to, just create some tracks and watch for one that's soloed

under track in the menu bar, there is "show track", after clicking itthe track lock will show up to the right of the 2 "no effectcs button". When I meant highlight I meant just the track lock button, one or all. To unlock you just click show track lock to undo.

Your colors may be different, but there is no mistaking which ones are selected.

I had this problem and solved it!

I chose the first track and went under the "track" menu and chose "duplicate track". This created a new duplicate track right under the original. The new track was "soloed". I un-soloed it and wallah! All the tracks were unmuted! I then deleted the duplicated track and all's well.

much thanks! I duplicated the first track and sure enough the new track was soloed! How odd.