At9tool |best|

(useful after changing configurations):

Modders use at9tool to create background music (BGM) for custom PS Vita themes. Since the console only recognizes the .at9 format for these themes, the tool is a required bridge for using any custom MP3 or WAV audio. 2. Looping Logic at9tool

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The at9tool serves as both an and a decoder for the ATRAC9 audio codec (.at9). at9tool