I realise that I'm probably a little late to the party with this one, but thought it was worth a share anyway...
First of all, a confession: I bore really easily, and over the last year I have actually found videoing my playing to be a really helpful practice tool. Not only can I listen back easily (and therefore pick holes in every single thing I do!), but I can also watch my hands and face as I play. We all 'teach' ourselves all the time, but this process allows me to observe my playing from a totally different perspective. Practising using video technology has helped me to spot issues I think I might otherwise have missed. I can also set myself goals, and at the end of the process I feel I've achieved something. This week I took the whole thing a stage further and downloaded the 'acapella' app - and basically it's tons of fun :)
Previously, recording multi-track video was a total nightmare (and involved using MovieMaker multiple times, and making my own click track.... ), I did a 4-part recording this way at Christmas-time last year and nearly drove myself mad! This app makes it all so much easier. It's dead easy to use, and you can set your own click track to suit & listen back as you add more layers. The free version will only give you a couple of minutes recording time (and be warned you need lots of spare memory if you're going to record for longer or with more layers!), but I paid for the full version, and am actually really impressed. Whoever designed this knew what musicians would need and how to make it intuitive to use. One nit I would pick though, is that there doesn't *seem* to be a way to balance up the parts/ screens before doing the final render. Some sort of separate mix-desk for the audio would be helpful. Perhaps there is one and I've just not found it yet!
Recording in this way is great for improving things like rhythm, intonation, and listening skills. You can even collaborate with other users of the app. This makes it a really fun and creative practice tool.
This weekend my better half whipped up an arrangement for me and the result is below (clarinet geeks, I'll post a link to where you can buy it shortly!). No this recording isn't perfect, but hey, it was lots of fun to make and I've been stunned by the number of shares & positive feedback! Watch 'til the end ;)