Hey Waterpump, I use ASIO/VSTi's with wine. you should also look at using FST and it's frontend "Festige". FST wraps you VSTi/Vstfx. You can use them "host-less" or you can use them in a DAW that is built to handle them. WineASIO is good for hosting "standalone apps" that are looking for the ASIO driver, or for using a small host like VSThost(.exe) which can host multiple VSTs)... While i would say FST is more integrated into the Jack environment. As for licensing, i don't think that you need it. I know you can get the ASIO SDK just by joinging the developer portal. (i use it all the time). FST doesn't require any license, it's GPL. jordan