According to the Ethnologue, the Riff languages are a genetic subgroup of the Zenati languages including 2 languages and dialects spoken in the Rif area of Morocco. Other sources regard Senhaja de Srair as non-Zenati, and thus see "Riff languages" as an areal rather than genetic grouping.
This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.
This list is not necessarily complete or up to date - if you see an article that should be here but isn't (or one that shouldn't be here but is), please update the page accordingly.
Do note, however, that there is already a list of musical instruments, a list of musical instruments by Hornbostel-Sachs number, a list of musical ensembles, and similar lists exist at composer, musician, record producers, arranger, list of genres of music, list of record labels, and list of songs by name.
RIFFs are capable of holding various types of data.
The RIFX was included in the RIFF specs to for portability purposes, but many RIFF decoders are not capable of reading those files (DaubNet RIFF Viewer V1.3 now can!), so it may be wise for RIFF encoders to stick to that byte order, even on systems with Motorola byte order.
This is an incomplete list of programs, which are available as freeware / shareware / try-before-buy etc.