I kiiiiiiinda lost my original Soundcloud login years ago and figured it wasn't worth trying to find it again since I was so close to the upload cap and nobody listened to my stuff anyway. ^^'
All of the 8-bit and 32-bit packs has demos, though... scroll down to "download demo" and you should find zip files with a bunch of the songs from that music pack. (Some of the packs also has an embedded Youtube video showing off one of the songs... it's just 1 song but hopefully it's enough for a simple pass/fail check?)