You can only access the collaboration area, called "RiffLink", through the RiffWorks software.
If you're using RiffWorks, click on the RiffLink tab and log in with your Sonoma Key and password. From there you can open up other people's public collaborations and join in. Uploading your songs, called "RiffCasting" can also be done from within RiffWorks but you can do it 'manually' from your profile page in RiffWorld.
If this is still confusing, let us know what you're not sure of and we'll try to help out. We're all a very helpful bunch!

Oh ... and welcome to the RiffWorks forums, sleepless nights and as you'll no doubt be told by certain other individuals on here ... as the newest member, you have to buy everyone a beer!
