Just setting up this thread to share information with other users.
I recently got a pair of beats by dr. dre solo edition headphones, that have a "controltalk" cable with a built in mike (thinking they would work with my my phone). Apparently, the mike for the solos does not work with the Eris. I read around and checked monster's website, which said that the "universal controltalk" (not the one included with the solo beats, but the studio beats) would work. Not wanting to shell out more money for a headphones that I didn't need, I called monster to see if I could order just the cable. For $19.95 I'll be getting the universal controltalk cable shipped to me, and it should work with the solo headphones and with the Eris.
Once it arrives I'll post again. I thought there might be other Eris users out there interested in beats headphones, especially for the microphone feature. I couldn't find much information about it anywhere.