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Hi
How to convert DRM protected audio files to unprotected audio files.DRM files are purchased from iTunes(from Apple website) and i have to convert those files into unprotected audio files and those files should be in MPEG or AVI or WMV format.
Bala
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Hi,
why you convert audio-files into video-files?
why not into mp3?
But before you start to realise this project you need to know that it's not legal
to unprotect a DRM-Media...
So, if a user helps you in this case, the entire forum steps into a "crime"
Sorry to say it to you ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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Hi,
Not like that, convert Audio file to Audio files and Video file to video file.
It is not a crime,There is already a software called Tunebite where it converts DRM protected audio/video files to unprotected audio/video files.In this website www.tunebite.com they have given that it is not a crime.
Bala
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The only way to do this without braking the DRM is to burn an audio CD with the tracks and re-import them.
after that, if you want to convert them to mpeg or avi ( for whatever reason ) you can you Windows Movie Maker to export to some video format.
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surely you can't just burn an audio compatible CD with your iTunes purchases and then just use that to rip to mp3, because that would be comical.
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Thanks for the info. I guess the downgraded quality is their way of discouraging that as a wholesale way to crack purchased content redistribution, though what the final bitrate/quality is like I don't know. Could you even tell on a personal MP3 player sat on a train? I doubt it.
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Yeah... Just like being able to use a black marker or some scotch tape to defeat the copy protection on a CD would be ridiculous, right? 
http://www.informationweek.com/story/showArticle.jhtml;articleID=174400748[^] 
Peace!
-=- James Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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Hi,
if we not break DRM then those files will not play in our ordinary pc and players.
My requirement is to convert audio/video files which are brought from iTunes and convert them to to MPEG or AVI or WMV format. In iTunes the files will be DRM protected, so i need to unprotect the files to play in ordinary players.
Thanks for quick response.
Bala
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you cannot legally break the DRM.
The work-around I gave you is the only way to legally do it, if it's done for a personal usage.
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Be aware that doing that is illegal in the US thanks to the DMCA.
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Hi everybody!
Is there any methods to compare system times similar to CompareFileTime for that of Files?
for eg:
if The time is 12 PM
Then,is there any method to compare 12PM>time1
and 12PM
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Use COleDateTime or CTime class.
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Depends on the object used to represent times. If using FILETIME use the function you mention above. If using time_t, you can just use greater-than and less-than.
Peace!
-=- James Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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Is reading/writing a 32-bit integer on Win32 guaranteed to be atomic ? I could not find that information anywhere.
wbr Brainley
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No. See here[^] for information on how to do it safely. If your programming x86 machine code you could also look up the lock prefix[^].
Steve
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I'm writing a procedure where two values, wich always make up a pair, can be changed from one thread, but read from many. I only want to make shure that a read-operation always returns a valid pair (writing is actually limited by a CRITICAL_SECTION). So i use a checksum. The thread reads the variables and then checks the sum against a checksum. If one of the values got changed somewhere in between, the checksum will not match and it will try again. This works, since simple read/write operations on 32-bit Integers are atomic on 32-bit systems. I chose this way because it is much faster that using a lock mechanism, since write operation happen a lot less often (> factor 20) than write-operations.
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How can it get changed if only one thread ever changes it? How can you be sure it doesn't get
changed while computing the checksum? Is a critical section really that slow?
"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")
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Here a scenarion. Thread A reads, Thread B writes, the pair consists of V1 and V2 of type int.
A reads V1
B writes V1
B writes V2
A reads V2
So now A has a pair that does not belong together. Now consider this :
A reads V1
B writes Checksum V1+V2
B writes V1
B writes V2
A reads V2
A checks the Sum -> does not match, so A tries the read again.
There are a lot more cases, but they all work out.
Using a CRITICAL_SECTION or any other kind of synchronization would mean traps into the OS and context-switches on the wait-operations. In cases where such an optimistic approach is possible, that means the probability of an error, and thus a second or even third read is very low, the performance is higher this way.
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The spin count on a CS object can be utilitized to handle situations like this, but you really need to be on a multi-CPU/multi-core machine to really make use of it.
If the CS is released during the spin count, no context-switch will take place. Given that simple operations are being done, I would bet that you would hit that situation more often than not.
Peace!
-=- James Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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I just hijacked the thread for my own personal learnin'...
Can you explain what the heck you're talking about?
*edit* Google is my friend: Critical Section Objects[^] 
Thanks!
Mark
"Great job, team. Head back to base for debriefing and cocktails."
(Spottswoode "Team America")
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Looks like you should do some research on "readers writer locks".
Steve
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hi
i need to read and write the registry values using vc++.
if anyone has any idea please forword itto me.
thanks.
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Have a look at CRegKey on MSDN.
And please delete your previous message.
Glory follows virtue as if it were its shadow.
- Marcus Tullius Cicero
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