7.1 Dolby TruHD downmixed to 5.1?

[mainman]

This article about the PS3 states the following:

"Bitstream"ing of Dolby TrueHD audio is currently not supported on the PS3. The PS3 must decode the signal internally and only the HDMI cable is supported. In addition, 7.1 channels are downmixed to 5.1 channels of Linear PCM. TOSLINK not supported because of bandwidth issues.

Also, I didn't know PS3 supported DTS-HD, and can DTS-HD use TOSLINK????:

dts-HD High Resolution Audio (dts-HD HRA) is a lossy format and is supported in the PS3. However decoding is supported for both "bitstream" and "Linear PCM" in the PS3. dts-HD HRA is dts Digital Surround (the Core) plus any extra frequencies or channels up to 7.1. However, the PS3 will downmix 7.1 channels to 5.1 channels before sending it down the HDMI or TOSLINK. If selecting "Linear PCM", TOSLINK can only ouput stereo channels.

http://www.edepot.com/playstation3.html