HEY! if youre ordering online do tell me! i order with you and we share shipping can? PM your hp no. and we can settle details heheheh.
About warranty i believe you just email ety, and then mail it to them..
"Etymotic Research, Inc. automatically warrants the following products against defects in material or workmanship from the date of original purchase from an authorized Etymotic distributor or reseller. On-line registration or completion of warranty cards is not required." -so just mail them invoice of purchase and...
"Etymotic will repair or replace the defective product at its option if returned within the warranty period to our service facility. This warranty is in lieu of all other warranties, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose."-mail them the earphones itself and let them repair!