at the moment I mostly use the free version of Spotify web player along with an ad blocker. it works just fine, even if it gets kinda laggy sometimes. the app is unusable when you can't choose a single song to play.
lately, however, I've been moving some of my favourite songs onto an SD card in preparation for getting a dedicated music player! no need for wifi, no ads, saving battery life on my other devices, it'll be a dream come true. I never grew up with iPods or other dedicated players, so maybe this is just because you always want what you can't have, but I'm kinda jealous of the people who did. I admire everyone who's eager to pay for their music, since my plan is to just use any random youtube-to-mp3 converter. as much as I want to use my mp3 collection as my default way to listen now, my laptop overheats too fast. I did get a nice player second hand that one time but it turned out to be half broken and I had to return it. thus the search continues.
if I really like an album, I'll try to buy the CD. I only have 4 in my personal collection so far though, and if I do end up with a good player, CD collecting will fall further down my list of priorities.