Hello,
I find this extension very good. Only a suggestion (taken from other receivers): it would be more comfortable to have a way to rapidly go forward or back with direct access (for instance using P+/P- as other buttons are already needed to perform other functions).
I know it's possible to jump by 1/3, 4/6, 7/9, that's just something, but it's not the same than moving cursor fw and rev directly, like in other receivers or PC players even because the jump are fixed by the configuration: to change the you have yo re-configure them. Direct browsing is at your will.
Finally, the ultimate features would be having also a little preview during this fast browsing, like some players or media centers do.
Anyway, EMC is already very good, in my opinion!