Player:
Usually: Apple Music, despite a lot of annoyances
I like its Flipped playlists, and "Radio" for individual artists.
Rarely: Spotify (I keep an account depsite everything I hate about it)
Even more rarely: Bandcamp
Almost never: YouTube. It does pretty well for soundtracks.
Drastic action: Finding an MP3, though I can't think of the last time I did that. My brother is even pickier than me about music. He'll find MP3s of songs with skits in them and delete the skits, and "ban" artists he finds are morally reprehensible. He has even more honour than I do.
Tracking: Last.fm
Concerts: I track artists using Songkick and, to a lesser extent, Bandsintown.
Reviews: I rely pretty heavily on Pitchfork and, to a lesser extent, The Quietus.
Music news: Pitchfork's news has been good in alerting me that a band will go on tour or will have a new album out soon. I usually find out about a band touring on Pitchfork way before Songkick. Songkick lets me track individual artists a bit easier.