Guest Anonymous Posted June 6, 2003 Report Share Posted June 6, 2003 Has anybody had any success with Linux for recording onto Minidisc. I have an MZ-n707 and no windoze at this time. Any programs out there? Thanx Bob Quote Link to comment Share on other sites More sharing options...
marcnet Posted June 6, 2003 Report Share Posted June 6, 2003 Sony, in their infinite wisdom, decided to only support one operating system (Windoze) - and only support it badly. The transfer of audio between PC and MD is encrypted somehow and Sony software crashes (probably delibrate) whenever it detects a debugger is attached. So there is little hope of a 3rd party developer writing some decent software that allows Windows, Linux and others to use the cool and/or groovy NETMD in a non-sucky way. Quote Link to comment Share on other sites More sharing options...
hal_ Posted June 9, 2003 Report Share Posted June 9, 2003 Could not using VMware to debug the USB communication bypass the software looking for a debugger?. I'm pretty sure with their latest release of the workstation allows for some pretty low level debugging of USB. Just a thought Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 10, 2003 Report Share Posted June 10, 2003 Thanks for the vmware hint, unfortunatly vmware locks up on the install, so it's next to useless, must be the windoze influence!! We'll keep on trying, hopefully something comes up. Linux knows there is something on USB, just doesn't know what to do with it. Thanx, Bob Quote Link to comment Share on other sites More sharing options...
marcnet Posted June 10, 2003 Report Share Posted June 10, 2003 I should of made this clear (and I belive Im repeating myself, since this is in some other post of mine)... It wouldnt help if you could see the raw USB communication or even if you had a hardware black box that sits between the USB and the MD. This is because the audio data (PCM / Atrac3) is encrypted on the PC, sent to the MD in encrypted form and then the NETMD actually de-crypts the data itself . PS: Ive already hooked into the NETMDAPI dll and seen the commands needed to do all the stuff that the sony software does - ive even managed to send data to the MD. However, since I dont know how the encryption system works the NETMD just ignored the data I sent it due to its decoding/decryption routines not recognising the data I sent. I can rename tracks and do all winmd stuff using raw C/C++ calls to the NetMDAPI.dll though, but Im not releasing any MD software because a) I dont know how the encryption system works WinMD does all the stuff I can do - so whats the point? c) Im busy as Im a slave to the wage Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 11, 2003 Report Share Posted June 11, 2003 Many thanx Marcnet I really appreciate the depth and obvious time you have taken in this regard. Too bad Sony hasn't seen that there are other operating systems than windoze. As you saw from my first post, I am without windoze and don't know when I'll get it back. i've been recording on all formats sice the 60's, hope that doesn't age me too much. Realtime does't bother me too much, but sometimes quick is nice as well. till later Bob Quote Link to comment Share on other sites More sharing options...
marcnet Posted June 11, 2003 Report Share Posted June 11, 2003 I havent given up yet.. I still have a few tricks to try. Im mainly trying to disable to anti-debugging techniques Sony have put in place. A few guys at work suggested something I havnt tried yet - such as hooking certain Windows API and tricking the Sony software into thinking that there is no debugger running, when in fact there is. If I succeed in this I can see how the encryption system works. muhahahah..... Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 18, 2003 Report Share Posted June 18, 2003 Isn't it believed that in SP mode the data is encrypted PCM. If so wouldn't it be possible to use WinAmp or so to write the ATRAC3-file to PCM. When this is done you can watch your usb to get the encrypted data. Shouldn't it be possible to spot the encryption logarithm if you got both? Quote Link to comment Share on other sites More sharing options...
marcnet Posted June 19, 2003 Report Share Posted June 19, 2003 I believe SP is actually encrypted PCM data - the amount of data being chucked at the netmd in SP mode would suggest so. a) Sony have coded their com objects so that they only decrypt if they're directly connected to a sound device. Ive used graphedit to try other output filters - like a file writer - and it dont work. Im not great at maths, so how would I exactly work out the encryption algorithm from a plain-text file and an encrypted file? Quote Link to comment Share on other sites More sharing options...
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