This script uses the UNIX qlmanage command to display a Quick Look window of the selected track(s), which can be audio, video, and, perhaps most usefully, PDF, whereby Preview.app is not necessary. Also handy for playing a single track out of playlist context. Need I add that a keyboard shortcut makes this very handy.
Caveats: 1) under Leopard a media file will begin playing immediately, so the script uses a hack to prevent this, 2) under Snow Leopard and better the QL window's title contains "[DEBUG]" which cannot be suppressed, and 3) the QL window can only be dismissed by clicking on its close box.
Perhaps of Interest...
downloaded 1m 35s ago
Displays files in iTunes Media folder not in iTunes track library
downloaded 9m 14s ago
Use special track to stop iTunes, cue next track
downloaded 10m 44s ago
Services menu service copies selected text to the lyrics of the single selected iTunes track
downloaded 15m 48s ago
Two scripts copy text from clipboard to current or single selected track's lyrics tag
downloaded 18m 7s ago
Display, create text file listing info of dead tracks
downloaded 35m 18s ago
Copy track number prefixes to track number tags