hi all - i do urgently need a (professional) usb audio interface for my linux laptop (ubuntu 11.04). i need at least 4 seperate output channels. i don't have an express card slot or firewire. i have looked at the alsa site and read many threads, but i couldn't find any option which fits for my needs (emu0404 seems to work but needs an additional digital-analog-converter). any tip is very much appreciated. joachim