Recorded lectures can be placed anywhere on your vUWS site.
In the first instance it would be best for you to contact your unit co-ordinator to confirm if a particular lecture is available as a podcast. If it is available as a podcast, they will also be able to advise where this is located on your vUWS site.
If you are unsure who your unit co-ordinator is, you can check in the handbook and choose the Unit Search option.