Just got a new LG LED TV (55LV5500) - very nice. But with only a digital optical Toslink output, there was no way to hook up to my 10-year old Bose 5.1 system, which accepts only analog inputs.
Solution - Radio Shack DA-710 Digital audio to analog converter (their catalog number 15-093) for $39.99. This was recommended by Bose engineer as a cheaper solution than some others such as the Gefen box. Works great for all TV and DVD inputs I have.
Note that some other posters have reported that a DAC won't work with all their channels, and the RS unit instructions states that it can accept only standard 2-channel inputs, not any compressed formats. Seems to work just fine here with LG TV, Oppo DVD and Comcast Cable service.
Also when I called LG to ask for their suggestions, I got a scripted response that they could not recommend any converter solutions, and they were very sorry I didn't know this before I purchased. OK, my bad for not thinking about compatibility issues, but all I get is a crummy canned backside-covering response?
Anyway, success for only $40 plus the cost of a cable.