diff --git a/cpp/shared/apps/audio_classifier/audio_io.cc b/cpp/shared/apps/audio_classifier/audio_io.cc
index aa577b5f..ba9570cc 100644
--- a/cpp/shared/apps/audio_classifier/audio_io.cc
+++ b/cpp/shared/apps/audio_classifier/audio_io.cc
@@ -51,7 +51,7 @@
 
 #define SPEAKER_FRAMES_PER_DMA                        ALIGN_DOWN(LDMA_MAX_XFER_LENGTH, MPEG2_FRAME_LENGTH)
 #define SPEAKER_DMA_COUNT                             8
-#define SPEAKER_MP3_BUFFER_LENGTH                     4*1024
+#define SPEAKER_MP3_BUFFER_LENGTH                     8*1024
 
 
 // --------------------------------------------------------
diff --git a/mltk/utils/firmware_apps/download_urls.yaml b/mltk/utils/firmware_apps/download_urls.yaml
index 9c05fb2c..fd85dc74 100644
--- a/mltk/utils/firmware_apps/download_urls.yaml
+++ b/mltk/utils/firmware_apps/download_urls.yaml
@@ -1,11 +1,7 @@
 mltk_audio_classifier-audio_io-brd2601-mvp:
-  date: '2022-12-15T19:03:51.650Z'
-  sha1: 86c488de60334694bc58aa7b44e1a3f59ff11a2b
-  url: https://github.com/SiliconLabs/mltk_assets/raw/master/applications/mltk_audio_classifier/mltk_audio_classifier-audio_io-brd2601-mvp-f65b21ad.zip
-mltk_audio_classifier-audio_io-brd2601-none:
-  date: '2023-01-06T01:25:00.672Z'
-  sha1: a361f7eb9aaf00f673cc4127afdfb47beb4fb754
-  url: https://github.com/SiliconLabs/mltk_assets/raw/master/applications/mltk_audio_classifier/mltk_audio_classifier-audio_io-brd2601-none-bf49c0c4.zip
+  date: '2023-01-09T23:01:09.954Z'
+  sha1: 3769197dcd7998e59ce09152812014a52adbd955
+  url: https://github.com/SiliconLabs/mltk_assets/raw/master/applications/mltk_audio_classifier/mltk_audio_classifier-audio_io-brd2601-mvp-2a8ea36d.zip
 mltk_audio_classifier-brd2204-none:
   date: '2022-11-09T19:31:43.172Z'
   sha1: aeceeb3c01c40c9b511833e57b67991561ae4f3f