Help to open .xa files

[Caio Estumano]

Hey guys!

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I was trying to rip sounds and dialogues from "Mega Man Legends"(PS1), and.. well, all the files from the ISO, they were packed in .xa files. 
After that, i searched for a program who unzip that files, and unsuccessfully.
So I ask you, 
How I proceed?

I would greatly appreciate your help! 

[eureka]

Did you try PSound? PSound can play tons of Playstation music/audio files, try that.

[Caio Estumano]

Did you try PSound?  PSound can play tons of Playstation music/audio files, try that.

Yep, i I tried using the PSound, but only sound effects were recognized by the program. 

But I wasn't needing of sound effects , only the audio dialogues, so I did not have success using the PSound =/

[eureka]

Try other files, I guess? It's not uncommon for sound effects to be in character files as well.
Try scanning all the directories with the mounted ISO with File>Scan Directory.

[Caio Estumano]

Try other files, I guess?  It's not uncommon for sound effects to be in character files as well.
Try scanning all the directories with the mounted ISO with File>Scan Directory.

Ok, I'll try