hmm, thats interesting, we havent changed rm file behaviour between the latest and the 1.05 version and yet you are correct, it doesn't work in the latest one.
i can help you out with what you want if you send me an email
edit: we are doing a series of "rolling" releases with switch, which is why we haven't done an official announcement on the latest release. we've done 2 rolling releases so far, and another one or two are planned over the next few weeks. most of the updates are just bug fixes, but we're soon including support for saving to wma which is what a lot of people are after.