Our voice file transfer system accepts all compressed file formats including .dss (Digital Speech Standard), .wma and .mp3 files.

If you are using a large uncompressed format, for example .wav, it is usually best to convert these to a compressed format before uploading. Many sound file converters are available to download free of charge, for example Switch Sound File Converter is available from NCH Software at http://www.nch.com.au/switch/. If you need any assistance or advice about file sizes or converting files please do not hesitate to contact us.