diff --git a/VAG.md b/VAG.md
index 16cb0b7..dbc320c 100644
--- a/VAG.md
+++ b/VAG.md
@@ -10,35 +10,20 @@ piano sounds, explosions, and music. The typical extension in DOS is “.VAG”.
 
 See [FileFormat47.pdf](http://psx.arthus.net/sdk/Psy-Q/DOCS/FileFormat47.pdf), p.209
 
+## Audio to VAG conversion
 
-## WAV creation
-
-Use ffmpeg to create a 16-bit ADPCM mono WAV file - change -ar to reduce filesize (and quality)
+We have to convert the audio file to RAW data first :
 
 ```bash
-$ ffmpeg -i input.mp3 -acodec pcm_s16le -ac 1 -ar 44100 output.wav
+ffmpeg -i input.mp3 -f s16le -ac 1 -ar 44100 tmp.dat
 ```
 
-You can use Audacity to edit sound.
-
-## WAV to VAG convertion using WAV2VAG
-
-Get here : [WAV2VAG](https://github.com/ColdSauce/psxsdk/blob/master/tools/wav2vag.c)
-
-Change -freq according to the -ar setting above 
+then use [`wav2vag`](https://github.com/ColdSauce/psxsdk/blob/master/tools/wav2vag.c) to convert the data, making sure the `-freq=` parameter matches the `-ar` value used above  :
 
 ```bash
-$ wav2vag input.wav output.vag -sraw16 -freq=44100 (-L) 
+wav2vag tmp.dat output.vag -sraw16 -freq=44100
 ```
 
-### Bug ? 
-
-After conversion with WAV2VAG, the resulting VAG will sometimes have a pop at the very beginning and/or end of the file.
-
-You can check (and delete) this with PsyQ's VAGEDIT.EXE.
-
-You can also force the sampling frequency of an existing VAG file.
-
 ## VAGedit
 
 You can find a graphical editor in the [PsyQ sdk](http://psx.arthus.net/sdk/Psy-Q/PSYQ_SDK.zip) named `VAGEDIT.exe`.
@@ -51,3 +36,7 @@ See
   * libref47.pdf,   p.980
 
   * [http://psx.arthus.net/code/VAG/](http://psx.arthus.net/code/VAG)
+
+## Ressources 
+
+ * [wav2vag utility](https://github.com/ColdSauce/psxsdk/blob/master/tools/wav2vag.c)