Idol Project .. Releases/availability

The OAV series: Released in Japan in 1995 by KSS; I've not heard of any english companies buying the rights to the Idol Project OAV... so, possibly only available in Japan.

Soundtracks/games/etc: These exist, but only in Japan - I've heard no word about any licenses for the western world, and very much doubt any will be picked up for sale here.