Does anyone have any info on using an outboard DAC for Sirius Radio plug & play receivers? The Starmate and Sportster with home dock don't offer coax or optical digital out jacks unfortunately. Only analog 1/8 stereo jack to Stereo RCA. I guess I'm addressing the tweakers/modders out there for a way to bypass the internal DAC or add a digital out somehow. Am I being foolish? Should I just suck it up, buy a third subscription, and a stand alone Sirius tuner with digital outs? Let me know...!!! Thanks!