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Versions
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| I Don't Know (12") | Sol Pro Records | SP 10.01 | Italy | 2001 | |
| I Don't Know (12") | House Tempo | HT 5081 MX | Spain | 2001 | |
| I Don't Know (12", Promo) | Sol Pro Records | SP 10.01 | Italy | 2001 | |
| I Don't Know (12") | Sure Player | SPDJ 006 | US | 2003 | |
| I Don't Know (12", Promo) | Elan Records | ELAN 1020 | US | 2004 |