Thanks! This isn't exactly the solution I was hoping for, but without an "optical out" port on the receiver this seems like the only way to listen to both TV and stereo with this equipment.
I'm trying to send sound from my stereo (Sony STR-DG1100) to my new sound bar (Pioneer SPSB23W). The sound bar has two inputs--1 optical, and a pair of RCA jacks. I can hook the optical cable (the Pioneer manual says this is the preferred method) directly to my TV (Samsung LN52A650A) and get...