The Version 2 of RM for Mac now allows you to do the old-fashioned (from my Windows days at least) audio recording.

So rather than downloading the stream in whatever format it's being presented, you essentially record the stream itself. This allows you to use RM with sites like Amazon music and Rhapsody (Napster), which encrypt their streams.

In the old days, you could select the format, and even the bitrate for the resulting file. However, I don't see any way to do this with RM2 for Mac.

For example, Napster shows that it is sending you an AAC stream at 320kbps. But it is converting these tracks to MP3 format. Frankly I'd like to have those AAC files (M4A) rather than MP3.

How do I select this?