I really liked this app. WireTap became too convoluted and I didn't really like recording the audio output of my Mac. SBlaster takes a different approach and records the output of a specific app. Thus, I can record one app, and use another without interrupting the recording. I listen to a lot of streaming audio (podcasts, etc.) and I like to record them to listen on an iPod when I go running.
Unfortunately, Mavericks breaks this app. I upgraded to Mac OS X 10.9 and now SBlaster is unable to record any audio from a browser (I haven't tried other sources). I contacted Ondesoft tech support (I'm a paid customer) and was told they are working on a fix.
Please do. This app meets my specific need perfectly!