Thanks for your reaction. The sonds I was trying to record was not quiet, and I started without the external mic. I bought that one only because I thought that was the solution. So also without the external mic, the levels are extremely low. I mean, the levels in the screem seem normal, but when I play back, when I hear it on my computer (Mac Pro, very good speakers...) it's very low. Maybe it's the Edirol itself?
Thanks,
Mirjam