Again a small but annoying bug in the actual Djay for mac version.
Loading certain songs in Djay onto a table (via USB controller or double click on that song) will loading the song in djay BUT ALSO open iTunes!
The problem is reproducible and happens only an few certain songs (mp3 files).
The files are within the iTunes Music Library and in this folder there are only these album files… (checked with ls -al in terminal)
Here a small screencast showing the bug: