You can edit your own audio with audacity free and very easy
I keep hearing people who pretend they are helping podcasters with rubbish advice, try to get podcasters to pay them to edit audio, as if it is hard and expensive to do.
In truth it is very easy and you can use free soft wear such as audacity.
On the iPad I use WavePad. This is not free, but in the UK I paid £9 for the full software.
In new posts, I shall show how to use the soft wear.
The main difference I have found with audacity and WavePad, is that you can add tracks to audacity. You can sort of get around this in WavePad by pasting files together.