Well, my carefully crafted msg just mistakenly disappeared! Very frustrating..... Trying to make an audio CD to play in the sled's OEM 3-disk player built for them by Alpine. Tried it twice now and no joy. I'm burning it on the slowest speed possible, the files on the burned CD are .cda files, showing I selected "Audio CD" rather than dataCD. The disks are Memorex Music CD-R's, 700Mb, 80min, 40x in various colors: Red, yellow, blue, green, purple and black. When I bought these > 10yrs ago, I thought they were specific AUDIO CD'S made for players that wouldn't recognize a DATA CD. (Guess I was wrong). However, the same disk will play fine in a Panasonic DMR-E85H DVD recorder, a Sony DVP-NS700P CD/DVD/Video CD player and even an old CAL Icon Mark II CD-only player from the mid 90's! I'm very surprised the CAL unit does this, besides the Volvo's unit, it's the only CD only player I have that will only recognize the red-book format. Any ideas what's going on here? My other option is to add an AUX input to the Volvo's unit to feed a signal from an MP3 player.