If people prefer megaupload I have uploaded the firmware files I managed to compile (but sadly neither worked with my player)
http://www.megaupload.com/?d=HK6I00Z8 is the Actions 7515 9.1.51 (NODRM) firmware
http://www.megaupload.com/?d=L1H2MWRE is the Actions 7515 9.1.51 (DRM) firmware
Lolita's comprehensive information files are at:
http://www.megaupload.com/?d=LL4AP97L is the source code, firmware components, tools, hardware diagrams etc for the Actions 7515 9.1.51 (NODRM)
http://www.megaupload.com/?d=0P68FUMC is the source code, firmware components, tools, hardware diagrams etc for the Actions 7515 9.1.51 (DRM)
Good luck. I reckon we need some good embedded realtime programmers on the case!
PS sorry I made mistake & listed this as for Actions 7515_S75 when I now actually this it is for straight Actions 7515 chip...