When talking about sound quality, I would not play anything less than a 320kbps MP3 or a 256kbps AAC file when DJing… Lower than that, over a half-decent PA system is not gonna sound it’s best..
My experience with Soundcloud though is that if the artists offers a download it tends to be a 320kbps MP3.. Not seen any which are lower..
Here at DDJT fully recommend that you pay for all your tracks – unless specifically offered by the Artist themselves as a free download. Any other form of downloading is illegal and is considered to be beyond bad practice as a DJ – you make money from their music do you not? Then pay for it (at 99p per track there are no excuses..).
bob6397