Using the software gives you two great advantages:
1. Mobility - use it everywhere
By having your podcast-software stored on your local audiodevice,
you can use it on every computer you are connecting to
without further installation.
2. Direct download to MP3-Device
Podcast-audiocontent is directly downloaded to your audiodevice.
You don't need to worry about copying files manually or
having a music-management-software (like iTunes) installed.
Just deconnect the audiodevice from the computer after
downloading and start listening.