[Openal] Handling Proprietary File Formats

Grant Johnson grant at amadensor.com
Wed Jun 1 06:22:32 PDT 2005


> 
>Two questions:
> 
>1)  Has anyone else run into these or similar problems, and if so, how
>have you solved them?
>  
>
My solution for protected files has been for fair use reasons.   What I 
have done is delivered a partial file with missing interlaced data.   
Each user then generates their own encryption key, and passes me the 
public key.   I then use this to encrypt the missing data.   The user's 
application then decrypts the file, and replaces it interleaved during 
playback.  This does not prevent the user from modifying the application 
to run the output somewhere else, but it is enough to prevent casual 
copying.   With the freedom to modify the application, which is the 
cornerstone of FOSS, I do dnot see a way to prevent someone from 
changing the target of a stream from the sound card to disk.


> 
>2)  What are the best sources of open source production quality sound
>files on the internet?  
> 
>  
>
Make your own!   It is fun too.   Depending on number of samples needed, 
and the nature of the samples, it may even be cost effective.



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