I'm using the MMC control to record WAV files. The setting is set to Overwrite. I can record the first WAV ok. Now, if I want to overwrite that same WAV file, the initial lenght of the first WAV file is now the fix length of all other recordings I'll do. So, assuming I record the first version with 20 seconds. Now, I overwrite that version with a 12 seconds length. The 12 seconds will be recorded ok but the recording will also include the last 8 seconds of the first version. How can I reset that?