re pagination/infinite scroll: I had the same problem, it was fucking unbearable to check out peoples' earlier stuff. Luckily, Soundcloud has a very decent public API, which you can use to roll your own narrow client, for whatever you're looking for with the features you want: https://developers.soundcloud.com/docs/api

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Here, start from my own (extremely crude, for personal use, not for public consumption) "Soundcloud User Unpaginator":

Source: https://github.com/gadtfly/Soundcloud-User-Unpaginator/

Running: https://soundcloud-user-unpaginator.herokuapp.com/ (warning: heavy, totally synchronous, server-side blocking, on Heroku free tier)

Could be easily modified to download instead of list, if you want an archive.