Yes WAV. Soundclick make it very easy.

You upload songs, set up a shop and sell single tracks or album compilations.

There is a guide as to pricing limits, and they pay you weekly (subject to a minimum payout set by you) by PayPal.

They also make it easy for you to offer licences for sale to professionals.

I'm impressed.

I'm not sure that streaming audio actually prevents unpaid downloads, I'm going to check that personally, but at least you can limit your songs to streaming only.

Don T.