I get the following log message when I hit the play button on the remote when standing in the Home menu.
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Slim::Hardware::IR::executeButton (997) Button [play] with irCode: [undef] not implemented in mode: [home]
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I haven't seen any other problems beside the log message, it starts to play the music correctly.

I get similar messages in other menus, for example when holding play on an artist in the browse by artist menu I get several of these:
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Slim::Hardware::IR::executeButton (997) Button [play.repeat] with irCode: [undef] not implemented in mode: [browsedb]
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The problem might be just be that the log message should be set to a lower logging level, but someone with better knowledge of the code has to investigate if this is the case or not.