Advice on setup for recording multiple audio sources into video

[mitya33]

Hi guys

I wonder if someone could help me try to understand the set up I need to record some videos comprising not one but two audio sources:

• source 1 from my Samson Metor mic
• source 2 from my Yamaha MODX synthesiser (with all the standard outs).

I don't want to record the voiceover separately; I want to record both audio streams at once. My laptop doesn't have any line-in, so I'm looking at external soundcards, like the CSL USB 7.1 External Soundcard (I'd link to it, but the forum thinks I'm a spammer.)

I've found some which seem to fit the purpose, but I'm unsure a) if I'm heading in the right direction; b) whether the soundcard will power my Metor.

I assume I can't hope to record all three sources into a single device, i.e. a digital camera. I'm yet to shop for one of these but I've never seen one with two audio line-ins, far less one of them accepting audio over USB.

Could someone shed some clarity and give me some pointers? Thank you in advance!