The "WMA — solid post" part seems like shorthand or a comment on a forum/review — maybe you’re saying the episode was a (as in post-episode discussion or post-season return).
It sounds like you're referring to the Season 6 premiere of Rick and Morty (S06E01). rick and morty s06e01 wma
If you were looking for a file labeled "S06E01 WMA" — that’s likely a pirated audio rip. Can't help with that, but happy to discuss the episode’s plot or themes. The "WMA — solid post" part seems like