Just read your original post again. Maybe there isn't an absolute "audio_credits = project-1"?
Try some wildcards - search="audio_credits = %project-1%"
What you are asking for would best be handled by a new 'Invite' module.
Jamroom doesn't have one atm and unless there is more demand its not likely to be high on the 'to do' list.
But it might be a straightforward adaptation using jrNewLetter as a starting point should you want to check it out yourself?
The jrEmbed module should allow you to embed jrAudio (and jrVideo/jrGallery/jrFile etc.) items into a blog (and any other editor field).
There are functions in the modules to enable this, so if Nate's module includes these, that player should be embedable as well.
hth
Pa
If you can integrate the chatroom as a custom module, its all still do-able with jrFoxyCart, quotas and template modification, as described above. After subscription, users would be moved to a quota with the chatroom module enabled, and template mods. would also have to detect the day of week as well as the users' quota.
SteveX has a chat module here - http://www.jamroom.net/ultrajam/networkmarket/108/together-mpl - Have you checked that out?
Not sure how Dazed got to those requirements from Cadberry's post, but if he is correct, that can be done with subscriptions via the jrFoxyCart module switching profile quotas accordingly, and a bit of template work checking the user quota and showing the gallery images if valid.