References:

•  http://omappedia.org/wiki/OMAP_Angstrom#Enabling_TI_Hardware_Accelerated_Codecs
•  http://www.omappedia.org/wiki/OpenMAX_Project
• is not currently used,but it could be worth a try

•  http://elinux.org/BeagleBoard/DSP_Howto
•  http://elinux.org/BeagleBoard/DSP_Clarification

For the last link: there is a dsplinkk.ko in Archos FW. There are also drivers/dsp/bridge/ and drivers/dsp/dspgateway in Archos kernel sources. They are hiding something from us...