Here are some free (Creative Commons Zero) acoustic drum loops for you to use in your tracks. There are 12 drum loops in total, made up of three sets of loops. Each set has a main loop and three fill variations. All loops are 44.1kHz/16-bit Acidized WAV files. Each filename specifies the tempo of the loop in BPM in case you can’t or don’t want to use the embedded tempo information.
You can listen to a preview of the loops on Soundcloud. The preview is only 128kbps MP3, the WAV files have better sound quality.