How to bulk rename audio files so that the file name matches the title metadata (preferably using Foobar2000)?

It is very easy to do with Mp3tag.

Load the files in it, select them, then go to 'Convert' and select 'Tag-Filename', then edit the string according to what info you want to have in the file name (only the %title% if need be).

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The answer was suggested by a comment from Vinayak.

Foobar2000 has a special renaming tool designed specially for this kind of thing. I'm pretty sure it's installed by default.

Please follow these steps:

• Select the relevent album(s) (if using the library view) or the individual files (if using the playlist view)
• Right-click and choose File operations -> Rename to...
• For file name pattern, enter %title% (or use the ... button to select this)
• Click Run
• Foobar2000 will do the renaming and show you the result