Powershell - How to use "remove-item" with multiple selectors and wildcards?

For a single directory:

remove-item C:\path\to\test-folder\* -include *.mp3, *.mpeg

or a useful method for when files span multiple directories:

remove-item C:\path\to\test-folder\*.mp3, C:\path\to\other\test-folder\*.mpeg

or you could move to that directory first:

cd C:\path\to\test-folder\
remove-item *.mp3, *.mpeg

Use Get-Help Remove-Item -full for full details of available flags and usage.