I would like to know if the i.MX233 can decode AAC 192kbps stereo in software.
If not then I would much appreciate suggestions for reasonably priced audio codec.
if you want to know if the i.MX233 is powerful enough to decode AAC 192kbps stereo in software then the answer is yes.
The i.Mx233 port of RockBox is doing so by using libfaad (I think) as well as our i.MX233 based Audio-Player by using a closed source AAC decoder.
The choice of the decoder depends on your SW platform (bare metal, Linux, etc.) and your requirements (battery runtime, CPU load, etc.)