Neologist supreme Philip Sherburne has a go at coining some terms for that anxiety-of-missing-out music-fiend syndrome

And Tiit Kusnets has a couple of cool suggestions:

"cornuconstipation"

"the harrasment of riches"

although they're more re. the excess of supply/backed-up-with-yer-stacks/audio-bloat sensation than the anxiety per se