. the Roland piece would take the three inputs and let you send one of the out the HDMI port, which you would need to capture (see below)
. the HDMI on your laptop is output only (it can not capture video)
. to capture the video, you would need something like a Black Magic capture device (
https://www.blackmagicdesign.com/products/intensity) but that only can capture one HDMI stream and there were be a few frames of lag (search the forums for other peoples experiences using the Black Magic capture devices)
. if you use the Advanced Output in Modul8 - you can use the thunderbolt ports for Video out (using something like this -
http://www.amazon.com/Cable-Matters-Dis ... B00ESM3ISM ) or you can go to the next level and use a Matrox piece that will allow 2 or 3 outputs from a single thunderbolt connection (
http://www.matrox.com/graphics/en/produ ... splayport/ )
-james
(a nomad. )