Midwesterner: The Minhag has always clearly been to be Meikil by this (I gave a Hesber in another thread) and that is what Minhagei S’firah is really dependent on-the Minhagim.
What I find sad is that people now define S’firas Ha’omer by not listening to music. An unheard-of concept 250 years ago has become the definition of S’fira. I think a lot of people, more than just those who do listen to music (whether a capella or real), miss the point of S’fira.