SdrDx 2.10 adds support for pure audio SDRs such as the Softrock, as well as the ability to demodulate pure audio input from recordings and radios with IQ outputs.
Control of this type of SDR is implemented with an external program that catches TCP messages from SdrDx about frequency changes and forwards them to the audio SDR in whatever format it needs. A sample Python client is supplied that contains everything but the actual mechanism to talk to the specific SDR, which can be implemented as a stand-alond command line program.
2.10 also brings with it an optional new black user interface (BUI), new documentation, and RF waveform fill. The 50 MHz lower limit for the FunCUBE Dongle has been removed in order to accommodate the new FCD Plus, which extends reception into the HF region.
Screen shot: http://www.flickr.com/photos/fyngyrz/7891402954/