Your audio tag is off. It’s Michael not Micheal.
Of course wav → flac is lossless (i.e. wav → flac → wav is, digitally speaking, the identity). It’s possible, I suppose, that on low-powered or poorly engineered devices flac → wav might be slow enough to cause some sort of issues if an appropriate buffer isn’t maintained, but I have a portable flac → wav device from 2004 with no such issues, so I would be surprised.