To automatically download slides and recordings of Microsodt Ignite 2015 download the PowerShell script here. You can also add a commandline option to filter the breakout sessions you are interested in.
The procedure is very simple
Download the PowerShell script to your laptop/pc
make sure the execution policy is adjusted : PS C:\temp> set-executionpolicy unrestricted
to download all sessions on Hyper-V and Azure
PS C:\temp> .\DownloadIgnitevideosandslidesv3.ps1 -keyword “Azure,Hyper-V”
All recordings and slides will be saved in a folder c:\ignite