Learn how to create a podcast properly. These are all the questions you need to ask before pressing record.
I use a company called host gator ) and have used them for close to 20 years.
You don't have to purchase a year in advance to get a good price (around $8 a month).
I do NOT recommend you use ANY "web host" for your media files.
The hosting I use is Host Gator or Blue Host I prefer Host Gator as they do not require you to order a year of hosting to get a good price (but if you do it's even better).
To understand web hosting and domain names, please see the "Understanding Hosting" Supplemental Information