I have uploaded the OSX 10.6/10.7 binaries for Csound 6.00 RC2.  
This is similar to Steven's OSX10.8, except for:

- no manual yet 
- no stk opcodes.
- support libs are the same ones I distribute for Csound5.19, so I do not expect
any issues with them.

as with the 10.8 package, it can be overlaid onto Csound 5.19 without breaking frontends,
but you will get a Csound 6 command line program instead.

Regards

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie