Or…
[string]$Text = $Obj | select @{E={'[' + $.text + ‘](’ + $.xmlurl + ‘) - a podcast I listen to [RSS link](’ + $_.xmlurl + ‘)’ + ‘xxx’ }} | out-string -width 4096
Or…
[string]$Text = $Obj | select @{E={'[' + $.text + ‘](’ + $.xmlurl + ‘) - a podcast I listen to [RSS link](’ + $_.xmlurl + ‘)’ + ‘xxx’ }} | out-string -width 4096