PowerShell script to remove dead entries from the iTunes library

RemoveDeadTracks.ps1

# get reference to the running iTunes
$itunes = New-Object -ComObject iTunes.application

# get all tracks in the entire library
$allTracks = $itunes.LibraryPlaylist.Tracks

# find the entries that are no longer on disk
# NOTE: the API returns the location as null for those, so we check for 
# that instead of doing our own filtering based on test-path or similar
$deadEntries = $allTracks | ?{ $_.Location -eq $null }

# now that we know which entries are invalid, delete them from the library
$deadEntries | %{ $_.Delete() }