You may send your audio files (.wav) over the Internet.  We recommend using TransferBigFiles.com

Many free file transfer services only allow you to send one file at a time.  However, TransferBigFiles.com, allows you to send up to five (5) files at once.  If you have a 10 song CD, you simply make two file transfers.  One for songs 1 through 5, and one for songs 6 through 10.  Keep in mind that internet file transfers do take some time.  How fast your songs upload will be determined by the file size and the speed of your internet connection.

If you're sending files over the Internet, be advised that work will not begin on your project until payment is received.

When using TransferBigFiles.com, use the "Advanced Options" link located just below "Recipient's e-mail."  Include your name and e-mail address.  For recipient's e-mail, use our Audio Upload Center address:  upload@cdmasteringservices.com