aac channel ordering for multi-channel audio

Date: Sun, 28 Sep 2008 20:17:54 +0200
The channel order of aac 5.1 audio is wrong during playback. IIRC, the
internal channels order for this kind of streams is the same as dts: dts
output is reordered according to alsa specs (and ac3 5.1 also works), but
aac is not and - for instance - front center is send to front left.

The audio channels configuration table should be something like this

##  ---------------------
## | Config:  5.1 Ch     |
##  ---- ----------------  -------------- --------------
## | Ch |     AAC/DTS    |      ALSA     |      AC3     |
##  ---- ---------------- --------------- --------------
## | 00 | Center front   | Left front    | Left front   |
## | 01 | Left front     | Right front   | Center       |
## | 02 | Right front    | Left back     | Right front  |
## | 03 | Left back      | Right back    | Left back    |
## | 04 | Right back     | Center        | Right back   |
## | 05 | LFE            | LFE           | LFE          |
##  ---- ---------------- --------------- --------------

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