Batch audio dumping

[Agent69]

According to the WAV file specification, the "fact" chunk gives the sample length:
http://www-mmsp.ece.mcgill.ca/Documents/.../WAVE.html

length 4: Chunk ID: "fact"
length 4: Chunk size (minimum 4, it seems the PSP is using 8)
length 4: Number of Samples

This value seems to be different for files having the same length. But this chunk is not always located at the same place in the header. So the approach would be to search for the "fact" chunk and take the 32-bit "Number of Samples" following it.
Examples based on hyakki's post:
Atrac-0000C7CC-000420FF.at3 ("Number of Samples" 32-bit value at 3C)
Atrac-001DC5E4-006CD401.at3 ("Number of Samples" 32-bit value at 50)

Does this method work on CC?

nice idea.
Testing on CC:

Code:

###########################################_DUPS_#########################################
Atrac-17759x-1536617947x-1435890748.at3 ---> Atrac-17759.at3   CRC32: 683924957
Atrac-17759x1937771214x1380160688.at3 ---> Atrac-17759.at3   CRC32: 2570913708

Atrac-31634x-1584297101x541116802.at3 ---> Atrac-31634.at3   CRC32: 1543312282
Atrac-31634x-2020536832x1378449617.at3 ---> Atrac-31634.at3   CRC32: 870595897

Atrac-416427x-490584339x315634795.at3 ---> Atrac-416427.at3   CRC32: 4114682445
Atrac-416427x1428059941x1368478490.at3 ---> Atrac-416427.at3   CRC32: 2775905477

Atrac-74529x-2135713462x13224292.at3 ---> Atrac-74529.at3   CRC32: 1635851086
Atrac-74529x903750956x-2141885254.at3 ---> Atrac-74529.at3   CRC32: 1754929989

good result for ~1300 files.