would it be possible to update the software to allow me to record onto WAV file or something.

'Fraid not. The ARM processor probably has the power to do this, but the hard drives are always mounted read-only (except when emplode is running) for a lot of good reasons, primarily to assure that your data remains un-corrupted in the rather demanding environment of in-car operation.

tanstaafl.

"There Ain't No Such Thing As A Free Lunch"