TwistedWave is a neat little online audio editor that I just found out about from Free Technology 4 Teachers. This new (beta) site allows for users to upload or record an audio file and then edit it. Also, TW integrates w/ SoundCloud and Google Drive to make for easy uploading/exporting. Editing options include the ability to cut, fade in/out, adjust pitch, and more making it a rather robust online tool.
I highly recommend checking TwistedWave by clicking here!!!